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1. Detailed spectroscopy of doubly magic $^{132}$Sn

Author

Benito, J., Fraile, L. M., Korgul, A., Piersa, M., Adamska, E., Andreyev, A. N., Álvarez-Rodríguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D. V., Fedosseev, V. N., Fernández-Martínez, G., Fijałkowska, A., Fila, M., Fynbo, H., Galaviz, D., Galve, P., García-Díez, M., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Ibáñez, P., Illana, A., Janas, Z., Jolie, J., Judson, D. S., Karayonchev, V., Kicinska-Habior, M., Konki, J., Kurcewicz, J., Lazarus, I., Lica, R., López-Montes, A., Lund, M., Mach, H., Madurga, M., Marroquín, I., Marsh, B., Martínez, M. C., Mazzocchi, C., Marginean, N., Marginean, R., Miernik, K., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Olaizola, B., Page, R. D., Paulauskas, S. V., Pascu, S., Perea, A., Pucknell, V., Rahkila, P., Raison, C., Rapisarda, E., Régis, J. -M., Rezynkina, K., Rotaru, F., Rothe, S., Sánchez-Parcerisa, D., Sánchez-Tembleque, V., Schomacker, K., Simpson, G. S., Sotty, Ch., Stan, L., Stanoiu, M., Stryjczyk, M., Tengblad, O., Turturica, A., Udías, J. M., Van Duppen, P., Vedia, V., Villa-Abaunza, A., Viñals, S., Walters, W. B., Wadsworth, R., and Warr, N.

Subjects
Nuclear Experiment
Abstract

The structure of the doubly magic $^{132}_{50}$Sn$_{82}$ has been investigated at the ISOLDE facility at CERN, populated both by the $\beta^-$decay of $^{132}$In and $\beta^-$-delayed neutron emission of $^{133}$In. The level scheme of $^{132}$Sn is greatly expanded with the addition of 68 $\gamma$-transitions and 17 levels observed for the first time in the $\beta$ decay. The information on the excited structure is completed by new $\gamma$-transitions and states populated in the $\beta$-n decay of $^{133}$In. Improved delayed neutron emission probabilities are obtained both for $^{132}$In and $^{133}$In. Level lifetimes are measured via the Advanced Time-Delayed $\beta\gamma\gamma$(t) fast-timing method. An interpretation of the level structure is given based on the experimental findings and the particle-hole configurations arising from core excitations both from the \textit{N} = 82 and \textit{Z} = 50 shells, leading to positive and negative parity particle-hole multiplets. The experimental information provides new data to challenge the theoretical description of $^{132}$Sn., Comment: 19 pages, 11 figures. Accepted for publication in Phys. Rev. C

Published
2020
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2. Study of multi-neutron emission in the $\beta$-decay of $^{11}$Li

Author

Delaunay, F., Achouri, N. L., Algora, A., Assié, M., Balibrea, J., Banerjee, K., Bhattacharya, C., Borge, M. J. G., Cano-Ott, D., Fernández-Domínguez, B., Fraile, L. M., Gibelin, J., Lund, M. V., Madurga, M., Marqués, F. M., Marroquin, I., Martínez, T., Mendoza, E., Orr, N. A., Pârlog, M., Pereira-López, X., Pestel, V., Riisager, K., Santos, C., Sénoville, M., Tengblad, O., and Vedia, V.

Subjects
Nuclear Experiment
Abstract

The kinematics of two-neutron emission following the $\beta$-decay of $^{11}$Li was investigated for the first time by detecting the two neutrons in coincidence and by measuring their angle and energy. An array of liquid-scintillator neutron detectors was used to reject cosmic-ray and $\gamma$-ray backgrounds by pulse-shape discrimination. Cross-talk events in which two detectors are fired by a single neutron were rejected using a filter tested on the $\beta$-1n emitter $^9$Li. A large cross-talk rejection rate is obtained ($> 95 \%$) over most of the energy range of interest. Application to $^{11}$Li data leads to a significant number of events interpreted as $\beta$-2n decay. A discrete neutron line at $\approx$ 2 MeV indicates sequential two-neutron emission, possibly from the unbound state at 10.6 MeV excitation energy in $^{11}$Be., Comment: 4 pages, Proceedings of the EuNPC2018 Conference

Published
2019
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3. First Accurate Normalization of the $\beta$-delayed $\alpha$ Decay of $^{16}$N and Implications for the $^{12}$C$(\alpha,\gamma)^{16}$O Astrophysical Reaction Rate

Author

Kirsebom, O. S., Tengblad, O., Lica, R., Munch, M., Riisager, K., Fynbo, H. O. U., Borge, M. J. G., Madurga, M., Marroquin, I., Andreyev, A. N., Berry, T. A., Christensen, E. R., Fernández, P. Díaz, Doherty, D. T., Van Duppen, P., Fraile, L. M., Gallardo, M. C., Greenlees, P. T., Harkness-Brennan, L. J., Hubbard, N., Huyse, M., Jensen, J. H., Johansson, H., Jonson, B., Judson, D. S., Konki, J., Lazarus, I., Lund, M. V., Marginean, N., Marginean, R., Perea, A., Mihai, C., Negret, A., Page, R. D., Pucknell, V., Rahkila, P., Sorlin, O., Sotty, C., Swartz, J. A., Sørensen, H. B., Törnqvist, H., Vedia, V., Warr, N., and De Witte, H.

Subjects
Nuclear Experiment
Abstract

The $^{12}\text{C}(\alpha,\gamma){}^{16}\text{O}$ reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced $\alpha$ width, $\gamma_{11}$, of the bound $1^-$ level in $^{16}$O is particularly important to determine the cross section. The magnitude of $\gamma_{11}$ is determined via sub-Coulomb $\alpha$-transfer reactions or the $\beta$-delayed $\alpha$ decay of $^{16}$N, but the latter approach is presently hampered by the lack of sufficiently precise data on the $\beta$-decay branching ratios. Here we report improved branching ratios for the bound $1^-$ level [$b_{\beta,11} = (5.02\pm 0.10)\times 10^{-2}$] and for $\beta$-delayed $\alpha$ emission [$b_{\beta\alpha} = (1.59\pm 0.06)\times 10^{-5}$]. Our value for $b_{\beta\alpha}$ is 33% larger than previously held, leading to a substantial increase in $\gamma_{11}$. Our revised value for $\gamma_{11}$ is in good agreement with the value obtained in $\alpha$-transfer studies and the weighted average of the two gives a robust and precise determination of $\gamma_{11}$, which provides significantly improved constraints on the $^{12}$C$(\alpha,\gamma)$ cross section in the energy range relevant to hydrostatic He burning., Comment: 6 pages, 5 figures

Published
2018
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7. Exotic decay of Cs115

Author

Das, P., primary, Datta, Ushasi, additional, Chakraborty, S., additional, Rahaman, A., additional, Tengblad, O., additional, Agrawal, B. K., additional, Becerril, A., additional, Cederkall, J., additional, Dey, J., additional, Gottberg, A., additional, Imam, Sk Md Adil, additional, Kowalska, M., additional, Kurcewicz, J., additional, Lund, M., additional, Mandal, S., additional, Madurga, M., additional, Marginean, N., additional, Marginean, R., additional, Mihai, C., additional, Marroquin, I., additional, Nacher, E., additional, Negret, A., additional, Pascu, S., additional, Perea, A., additional, Rapisarda, E., additional, Rotaru, F., additional, Ray, J., additional, Sharma, P., additional, Stora, T., additional, Sotty, C., additional, Vedia, V., additional, Warr, N., additional, and Wadsworth, R., additional

Published
2023
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8. Beta-delayed proton emission from 20Mg

Author

Lund, M. V., Andreyev, A., Borge, M. J. G., Cederkäll, J., De Witte, H., Fraile, L. M., Fynbo, H. O. U., Greenlees, P. T., Harkness-Brennan, L. J., Howard, A. M., Huyse, M., Jonson, B., Judson, D. S., Kirsebom, O. S., Konki, J., Kurcewicz, J., Lazarus, I., Lica, R., Lindberg, S., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Munch, M., Nacher, E., Negret, A., Nilsson, T., Page, R. D., Pascu, S., Perea, A., Pucknell, V., Rahkila, P., Rapisarda, E., Riisager, K., Rotaru, F., Sotty, C., Stanoiu, M., Tengblad, O., Turturica, A., Van Duppen, P., Vedia, V., Wadsworth, R., Warr, N., and IDS Collaboration

Published
2016
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9. First beta-decay spectroscopy of In-135 and new beta-decay branches of In-134

Author

Piersa-Silkowska, M, Korgul, A, Benito, J, Fraile, LM, Adamska, E, Andreyev, AN, Alvarez-Rodriguez, R, Barzakh, AE, Benzoni, G, Berry, T, Borge, MJG, Carmona, M, Chrysalidis, K, Correia, JG, Costache, C, Cubiss, JG, Goodacre, T Day, De Witte, H, Fedorov, D, Fedosseev, VN, Fernandez-Martinez, G, Fijalkowska, A, Fynbo, H, Galaviz, D, Galve, P, Garcia-Diez, M, Greenlees, PT, Grzywacz, R, Harkness-Brennan, LJ, Henrich, C, Huyse, M, Ibanez, P, Illana, A, Janas, Z, Johnston, K, Jolie, J, Judson, DS, Karanyonchev, V, Kicinska-Habior, M, Konki, J, Koszuk, L, Kurcewicz, J, Lazarus, I, Lica, R, Lopez-Montes, A, Mach, H, Madurga, M, Marroquin, I, Marsh, B, Martinez, MC, Mazzocchi, C, Miernik, K, Mihai, C, Marginean, N, Marginean, R, Negret, A, Nacher, E, Ojala, J, Olaizola, B, Page, RD, Pakarinen, J, Pascu, S, Paulauskas, S, Perea, A, Pucknell, V, Rahkila, P, Raison, C, Rapisarda, E, Rezynkina, K, Rotaru, F, Rothe, S, Rykaczewski, KP, Regis, J-M, Schomacker, K, Silkowski, M, Simpson, G, Sotty, C, Stan, L, Stanoiu, M, Stryjczyk, M, Sanchez-Parcerisa, D, Sanchez-Tembleque, V, Tengblad, O, Turturica, A, Udias, JM, Van Duppen, P, Vedia, V, Villa, A, Vinals, S, Wadsworth, R, Walters, WB, Warr, N, and Wilkins, SG

Subjects
ISOMER, Science & Technology, NEUTRON EMISSION PROBABILITIES, Physics, MODEL, Physics, Nuclear, NUCLEAR-DATA SHEETS, STATES, Physical Sciences, ISOTOPES, PICOSECOND LIFETIME MEASUREMENTS, RICH NUCLEI, HALF-LIVES, SN-132
Abstract

ispartof: PHYSICAL REVIEW C vol:104 issue:4 status: published

Published
2021

10. Competition between allowed and first-forbidden beta decays of At-208 and expansion of the Po-208 level scheme

Author

Brunet, M, Podolyak, Zs, Berry, TA, Brown, BA, Carroll, RJ, Lica, R, Sotty, Ch, Andreyev, AN, Borge, MJG, Cubiss, JG, Fraile, LM, Fynbo, HOU, Gamba, E, Greenlees, P, Harkness-Brennan, LJ, Huyse, M, Judson, DS, Konki, J, Kurcewicz, J, Lazarus, I, Madurga, M, Marginean, N, Marginean, R, Marroquin, I, Mihai, C, Nacher, E, Negret, A, Pascu, S, Page, RD, Perea, A, Phrompao, J, Piersa, M, Pucknell, V, Rahkila, P, Rapisarda, E, Regan, PH, Rotaru, F, Rudigier, M, Shand, CM, Shearman, R, Simpson, EC, Stora, T, Tengblad, O, Van Duppen, P, Vedia, V, Vinals, S, Wadsworth, R, Warr, N, and De Witte, H

Subjects
Science & Technology, Physics, Nuclear, NUCLEAR-DATA SHEETS, STATES, Physics, Physical Sciences, TRANSITION
Abstract

ispartof: PHYSICAL REVIEW C vol:103 issue:5 status: published

Published
2021

11. Competition between allowed and first-forbidden β decays of at 208 and expansion of the Po 208 level scheme

Author

Brunet, M., Podolyák, Zs, Berry, T. A., Brown, B. A., Carroll, R. J., Lica, R., Sotty, Ch, Andreyev, A. N., Borge, M. J.G., Cubiss, J. G., Fraile, L. M., Fynbo, H. O.U., Gamba, E., Greenlees, P., Harkness-Brennan, L. J., Huyse, M., Judson, D. S., Konki, J., Kurcewicz, J., Lazarus, I., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Nácher, E., Negret, A., Pascu, S., Page, R. D., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Simpson, E. C., Stora, T., Tengblad, O., Van Duppen, P., Vedia, V., Vinals, S., Wadsworth, R., Warr, N., De Witte, H., European Commission, Science and Technology Facilities Council (UK), Federal Ministry of Education and Research (Germany), Ministerio de Economía y Competitividad (España), Research Foundation - Flanders, KU Leuven, Belgian Science Policy Office, National Science Centre (Poland), National Science Foundation (US), Department for Business, Energy and Industrial Strategy (UK), and National Measurement Office (UK)

Abstract

13 pags., 5 figs., 2 tabs., The structure of Po208 populated through the EC/β+ decay of At208 is investigated using γ-ray spectroscopy at the ISOLDE Decay Station. The presented level scheme contains 27 new excited states and 43 new transitions, as well as a further 50 previously observed γ rays which have been (re)assigned a position. The level scheme is compared to shell model calculations. Through this analysis approximately half of the β-decay strength of At208 is found to proceed via allowed decay and half via first-forbidden decay. The first-forbidden transitions predominantly populate core excited states at high excitation energies, which is qualitatively understood using shell model considerations. This mass region provides an excellent testing ground for the competition between allowed and first-forbidden β-decay calculations, important for the detailed understanding of the nucleosynthesis of heavy elements., The research leading to these results received funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 654002. Support from the European Union Seventh Framework through ENSAR Contract No. 262010, as well as the Science and Technology Facilities Council (U.K.) through Grants No. ST/P005314/1, No. ST/L005743/1, No. ST/J000051/1, No. ST/L005670/1, and No. ST/P004598/1, the German BMBF under Contract No. 05P18PKCIA and “Verbundprojekt 05P2018” as well as Spanish MINECO Grants No. FPA2015-65035- P and No. FPA2017-87568-P, FWO Vlaanderen (Belgium), GOA/2015/010 (BOF KU Leuven), the Excellence of Science Programme (EOS-FWO), the Interuniversity Attraction Poles Programme initiated by the Belgian Science Policy Office (BriX network P7/12), the Polish National Science Centre under Contracts No. UMO-2015/18/M/ST2/00523 and No. UMO-2019/33/N/ST2/03023, National Science Foundation (U.S.) Grant No. PHY1811855, and the Romanian IFA project CERN-RO/ISOLDE is acknowledged. P.H.R. acknowledges support from the U.K. Department for Business, Energy and Industrial Strategy via the National Measurement Office

Published
2021

12. Competition between allowed and first-forbidden β decays of At208 and expansion of the Po208 level scheme

Author

Brunet, M., Podolyák, Zs., Berry, T. A., Brown, B. A., Carroll, R. J., Lica, R., Sotty, Ch., Andreyev, A. N., Borge, M. J. G., Cubiss, J. G., Fraile, L. M., Fynbo, H. O. U., Gamba, E., Greenlees, P., Harkness-Brennan, L. J., Huyse, M., Judson, D. S., Konki, J., Kurcewicz, J., Lazarus, I., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Nácher, E., Negret, A., Pascu, S., Page, R. D., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Simpson, E. C., Stora, T., Tengblad, O., Van Duppen, P., Vedia, V., Vinals, S., Wadsworth, R., Warr, N., and De Witte, H.

Subjects
electromagnetic transitions, beta decay, fysiikka, nuclear structure and decays
Abstract

The structure of 208Po populated through the EC/β+ decay of 208At is investigated using γ-ray spectroscopy at the ISOLDE Decay Station. The presented level scheme contains 27 new excited states and 43 new transitions, as well as a further 50 previously observed γ rays which have been (re)assigned a position. The level scheme is compared to shell model calculations. Through this analysis approximately half of the β-decay strength of 208At is found to proceed via allowed decay and half via first-forbidden decay. The first-forbidden transitions predominantly populate core excited states at high excitation energies, which is qualitatively understood using shell model considerations. This mass region provides an excellent testing ground for the competition between allowed and first-forbidden β-decay calculations, important for the detailed understanding of the nucleosynthesis of heavy elements. peerReviewed

Published
2021

13. Competition between allowed and first-forbidden $β$ decays of $^{208}$At and expansion of the $^{208}$Po level scheme

Author

Brunet, M., Podolyak, Z., Berry, T., Brown, B., Carroll, R., Lica, R., Sotty, C., Andreyev, A., Borge, M., Cubiss, J., Fraile, L., Fynbo, H., Gamba, E., Greenlees, P., Harkness-Brennan, L., Huyse, M., Judson, D., Konki, J., Kurcewicz, J., Lazarus, I., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Nacher, E., Negret, A., Pascu, S., Page, R., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P., Rotaru, F., Rudigier, M., Shand, C., Shearman, R., Simpson, E., Stora, T., Tengblad, O., Van Duppen, P., Vedia, V., Vinals, S., Wadsworth, R., Warr, N., and De Witte, H.

Subjects
Nuclear Physics - Experiment
Abstract

The structure of $^{208}$Po populated through the EC/$β^+$ decay of $^{208}$At is investigated using $γ$-ray spectroscopy at the ISOLDE Decay Station. The presented level scheme contains 27 new excited states and 43 new transitions, as well as a further 50 previously observed $γ$ rays which have been (re)assigned a position. The level scheme is compared to shell model calculations. Through this analysis approximately half of the $β$-decay strength of $^{208}$At is found to proceed via allowed decay and half via first-forbidden decay. The first-forbidden transitions predominantly populate core excited states at high excitation energies, which is qualitatively understood using shell model considerations. This mass region provides an excellent testing ground for the competition between allowed and first-forbidden $β$-decay calculations, important for the detailed understanding of the nucleosynthesis of heavy elements.

Published
2021

14. First beta-decay spectroscopy of In-135 and new beta-decay branches of In-134

Author

Piersa-Silkowska, M., Korgul, A., Benito, J., Fraile, L. M., Adamska, E., Andreyev, A. N., Alvarez-Rodriguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, J. G., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D., V, Fedosseev, V. N., Fernandez-Martinez, G., Fijalkowska, A., Fynbo, H., Galaviz, D., Galve, P., Garcia-Diez, M., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Ibanez, P., Illana, A., Janas, Z., Johnston, K., Jolie, J., Judson, D. S., Karanyonchev, V, Kicinska-Habior, M., Konki, J., Koszuk, L., Kurcewicz, J., Lazarus, I, Lica, R., Lopez-Montes, A., Mach, H., Madurga, M., Marroquin, I, Marsh, B., Martinez, M. C., Mazzocchi, C., Miernik, K., Mihai, C., Marginean, N., Marginean, R., Negret, A., Nacher, E., Ojala, J., Olaizola, B., Page, R. D., Pakarinen, J., Pascu, S., Paulauskas, S., V, Perea, A., Pucknell, V, Rahkila, P., Raison, C., Rapisarda, E., Rezynkina, K., Rotaru, F., Rothe, S., Rykaczewski, K. P., Regis, J-M, Schomacker, K., Silkowski, M., Simpson, G., Sotty, C., Stan, L., Stanoiu, M., Stryjczyk, M., Sanchez-Parcerisa, D., Sanchez-Tembleque, V, Tengblad, O., Turturica, A., Udias, J. M., Van Duppen, P., Vedia, V., Villa, A., Vinals, S., Wadsworth, R., Walters, W. B., Warr, N., Wilkins, S. G., Piersa-Silkowska, M., Korgul, A., Benito, J., Fraile, L. M., Adamska, E., Andreyev, A. N., Alvarez-Rodriguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, J. G., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D., V, Fedosseev, V. N., Fernandez-Martinez, G., Fijalkowska, A., Fynbo, H., Galaviz, D., Galve, P., Garcia-Diez, M., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Ibanez, P., Illana, A., Janas, Z., Johnston, K., Jolie, J., Judson, D. S., Karanyonchev, V, Kicinska-Habior, M., Konki, J., Koszuk, L., Kurcewicz, J., Lazarus, I, Lica, R., Lopez-Montes, A., Mach, H., Madurga, M., Marroquin, I, Marsh, B., Martinez, M. C., Mazzocchi, C., Miernik, K., Mihai, C., Marginean, N., Marginean, R., Negret, A., Nacher, E., Ojala, J., Olaizola, B., Page, R. D., Pakarinen, J., Pascu, S., Paulauskas, S., V, Perea, A., Pucknell, V, Rahkila, P., Raison, C., Rapisarda, E., Rezynkina, K., Rotaru, F., Rothe, S., Rykaczewski, K. P., Regis, J-M, Schomacker, K., Silkowski, M., Simpson, G., Sotty, C., Stan, L., Stanoiu, M., Stryjczyk, M., Sanchez-Parcerisa, D., Sanchez-Tembleque, V, Tengblad, O., Turturica, A., Udias, J. M., Van Duppen, P., Vedia, V., Villa, A., Vinals, S., Wadsworth, R., Walters, W. B., Warr, N., and Wilkins, S. G.

Abstract

The beta decay of the neutron-rich In-134 and In-135 was investigated experimentally in order to provide new insights into the nuclear structure of the tin isotopes with magic proton number Z = 50 above the N = 82 shell. The beta-delayed gamma-ray spectroscopy measurement was performed at the ISOLDE facility at CERN, where indium isotopes were selectively laser-ionized and on-line mass separated. Three beta-decay branches of In-134 were established, two of which were observed for the first time. Population of neutron-unbound states decaying via. rays was identified in the two daughter nuclei of In-134, Sn-134 and Sn-133, at excitation energies exceeding the neutron separation energy by 1 MeV. The beta-delayed one- and two-neutron emission branching ratios of In-134 were determined and compared with theoretical calculations. The beta-delayed one-neutron decay was observed to be dominant beta-decay branch of In-134 even though the Gamow-Teller resonance is located substantially above the two-neutron separation energy of Sn-134. Transitions following the beta decay of In-135 are reported for the first time, including. rays tentatively attributed to Sn-135. In total, six new levels were identified in Sn-134 on the basis of the beta.. coincidences observed in the In-134 and In-135 beta decays. A transition that might be a candidate for deexciting the missing neutron single-particle 13/2(+) state in Sn-133 was observed in both beta decays and its assignment is discussed. Experimental level schemes of Sn-134 and Sn-135 are compared with shell-model predictions. Using the fast timing technique, half-lives of the 2(+), 4(+), and 6(+) levels in Sn-134 were determined. From the lifetime of the 4(+) state measured for the first time, an unexpectedly large B(E2; 4(+)-> 2(+)) transition strength was deduced, which is not reproduced by the shell-model calculations.

Published
2021

15. Competition between allowed and first-forbidden β decays of At208 and expansion of the Po208 level scheme

Author

Brunet, M., primary, Podolyák, Zs., additional, Berry, T. A., additional, Brown, B. A., additional, Carroll, R. J., additional, Lica, R., additional, Sotty, Ch., additional, Andreyev, A. N., additional, Borge, M. J. G., additional, Cubiss, J. G., additional, Fraile, L. M., additional, Fynbo, H. O. U., additional, Gamba, E., additional, Greenlees, P., additional, Harkness-Brennan, L. J., additional, Huyse, M., additional, Judson, D. S., additional, Konki, J., additional, Kurcewicz, J., additional, Lazarus, I., additional, Madurga, M., additional, Marginean, N., additional, Marginean, R., additional, Marroquin, I., additional, Mihai, C., additional, Nácher, E., additional, Negret, A., additional, Pascu, S., additional, Page, R. D., additional, Perea, A., additional, Phrompao, J., additional, Piersa, M., additional, Pucknell, V., additional, Rahkila, P., additional, Rapisarda, E., additional, Regan, P. H., additional, Rotaru, F., additional, Rudigier, M., additional, Shand, C. M., additional, Shearman, R., additional, Simpson, E. C., additional, Stora, T., additional, Tengblad, O., additional, Van Duppen, P., additional, Vedia, V., additional, Vinals, S., additional, Wadsworth, R., additional, Warr, N., additional, and De Witte, H., additional

Published
2021
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16. Competition between Allowed and First-Forbidden $beta$ Decay: The Case of $^208Hgrightarrow^208Tl$

Author

Carroll, R. J., Podolyák, Zs., Berry, T., Grawe, H., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Creswell, J. R., Fraile, L. M., Fahlander, C., Fynbo, H. O. U., Gamba, E. R., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I. H., Licifmmode ăelse ă, R., Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Nita, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Stegemann, S., Stora, T., Sotty, Ch., Tengblad, O., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

Published
2020

17. Competition between Allowed and First-Forbidden beta Decay : The Case of Hg-208 -> Tl-2(0)8

Author

Carroll, RJ, Podolyak, Zs, Berry, T, Grawe, H, Alexander, T, Andreyev, AN, Ansari, S, Borge, MJG, Brunet, M, Creswell, JR, Fraile, LM, Fahlander, C, Fynbo, HOU, Gamba, ER, Gelletly, W, Gerst, R-B, Gorska, M, Gredley, A, Greenlees, PT, Harkness-Brennan, LJ, Huyse, M, Judge, SM, Judson, DS, Konki, J, Kurcewicz, J, Kuti, I, Lalkovski, S, Lazarus, IH, Lica, R, Lund, M, Madurga, M, Marginean, N, Marginean, R, Marroquin, I, Mihai, C, Mihai, RE, Nacher, E, Negret, A, Nita, C, Pascu, S, Page, RD, Patel, Z, Perea, A, Phrompao, J, Piersa, M, Pucknell, V, Rahkila, P, Rapisarda, E, Regan, PH, Rotaru, F, Rudigier, M, Shand, CM, Shearman, R, Stegemann, S, Stora, T, Sotty, Ch, Tengblad, O, Van Duppen, P, Vedia, V, Wadsworth, R, Walker, PM, Warr, N, Wearing, F, De Witte, H, and Helsinki Institute of Physics

Subjects
Science & Technology, NUCLEAR-DATA SHEETS, Physics, Physical Sciences, Physics, Multidisciplinary, SELECTION RULE, Nuclear Theory, Nuclear Experiment, 114 Physical sciences
Abstract

The β decay of ^{208}Hg into the one-proton hole, one neutron-particle _{81}^{208}Tl_{127} nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z

Published
2020

18. Competition between Allowed and First-Forbidden β Decay: The Case of ^{208}Hg→^{208}Tl

Author

Carroll, R. J., Podolyák, Zs., Berry, T., Grawe, H., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Creswell, J. R., Fraile, L. M., Fahlander, C., Fynbo, H. O. U., Gamba, E. R., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I. H., Lică, R., Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Nita, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Stegemann, S., Stora, T., Sotty, Ch., Tengblad, O., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

Subjects
Nuclear Theory, Nuclear Physics - Experiment, ddc:530, Nuclear Experiment
Abstract

Physical review letters 125(19), 192501 (2020). doi:10.1103/PhysRevLett.125.192501, Published by APS, College Park, Md.

Published
2020

19. Octupole states in $^{207}TI$ studied through $\beta$ decay

Author

Berry, T. A., Podolyák, Zs., Carroll, R. J., Lică, R., Brown, B. A., Grawe, Hubert, Sotty, Ch., Timofeyuk, N. K., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Cresswell, J. R., Fahlander, C., Fraile, L. M., Fynbo, H. O. U., Gamba, E., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, P., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kowalska, M., Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I., Lund, M., Madurga, M., Mărginean, N., Mărginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Nae, S., Niţă, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Simpson, E. C., Stegemann, S., Stora, T., Tengblad, O., Turturica, A., Van Duppen, P., Vedia, V., Walker, P. M., Warr, N., Wearing, F. P., and De Witte, H.

Subjects
ddc:530
Abstract

Physical review / C 101(5), 054311 (2020). doi:10.1103/PhysRevC.101.054311, Published by APS, Woodbury, NY

Published
2020
Full Text
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20. (208)po populated through EC/beta(+) decay

Author

Brunet, M, Berry, TA, Podolyak, Zs, Carroll, RJ, Lica, R, Sotty, Ch, Andreyev, AN, Borge, MJG, Cubiss, JG, Fraile, LM, Fynbo, HOU, Gamba, E, Greenless, P, Harkness-Brennan, LJ, Huyse, M, Judson, DS, Konki, J, Kurcewicz, J, Lazarus, I, Madurga, M, Marginean, N, Marginean, R, Marroquin, I, Mihai, C, Nacher, E, Negret, A, Pascu, S, Page, RD, Perea, A, Phrompao, J, Piersa, M, Pucknell, V, Rahkila, P, Rapisarda, E, Regan, PH, Rotaru, F, Rudigier, M, Shand, CM, Shearman, R, Simpson, EC, Stora, T, Tengblad, O, Van Duppen, P, Vedia, V, Vinals, S, Wadsworth, R, Warr, N, De Witte, H, Publishing, IOP, European Commission, Science and Technology Facilities Council (UK), National Measurement System (UK), Federal Ministry of Education and Research (Germany), and Ministerio de Economía y Competitividad (España)

Subjects
History, Horizon (archaeology), 010308 nuclear & particles physics, Industrial strategy, 01 natural sciences, language.human_language, Computer Science Applications, Education, German, Political science, 0103 physical sciences, language, Economic history, media_common.cataloged_instance, Física nuclear, Nuclear Physics - Experiment, European union, 010306 general physics, ydinfysiikka, polonium, media_common
Abstract

The structure of 208Po resulting from the EC/β + decay of 208At was studied at CERN’s ISOLDE Decay Station (IDS). The high statistics afforded by the high yield of 208At and the high efficiency HPGe clusters at the IDS allowed for greater insight into lower intensity transitions and thus significant expansion of the 208Po level scheme. Furthermore, investigation into the isomeric state yielded a new half life 377(9) ns in addition to uncovering new transitions populating the state., The research leading to these results has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 654002. As well as the Science and Technology Facilities Council (UK) through grants ST/P005314/1, ST/L005743/1, ST/J000051/1, ST/L005670/1, and ST/P004598/1 and (PHR) by the UK Department of Business, Energy and Industrial Strategy (BEIS) via the National Measurement System. Further funding was provided by the German BMBF under contract 05P18PKCIA and ”Verbundprojekt 05P2018” as well as the Spanish MINECO grant FPA2015-65035-P.

Published
2020

21. Octupole states in 207Tl studied through β decay

Author

Berry, T A, Podolyák, Zs, Carroll, R J, Lică, R, Brown, B A, Grawe, H, Sotty, Ch, Timofeyuk, N K, Alexander, T, Andreyev, A N, Ansari, S, Borge, M J G, Brunet, M, Cresswell, J R, Fahlander, C, Fraile, L M, Fynbo, H O U, Gamba, E, Gelletly, W, Gerst, R B, Górska, M, Gredley, A, Greenlees, P, Harkness-Brennan, L J, Huyse, M, Judge, S M, Judson, D S, Konki, J, Kowalska, M, Kurcewicz, J, Kuti, I, Lalkovski, S, Lazarus, I, Lund, M, Madurga, M, Mărginean, N, Mărginean, R, Marroquin, I, Mihai, C, Mihai, R E, Nácher, E, Negret, A, Nae, S, Niţă, C, Pascu, S, Page, R D, Patel, Z, Perea, A, Phrompao, J, Piersa, M, Pucknell, V, Rahkila, P, Rapisarda, E, Regan, P H, Rotaru, F, Rudigier, M, Shand, C M, Shearman, R, Simpson, E C, Stegemann, S, Stora, T, Tengblad, O, Turturica, A, Van Duppen, P, Vedia, V, Walker, P M, Warr, N, Wearing, F P, and De Witte, H

Subjects
nucleon distribution, Nuclear Physics - Experiment, collective levels, beta decay, ydinfysiikka, nuclear structure and decays
Abstract

The β decay of 207Hg into the single-proton-hole nucleus 207Tl has been studied through γ-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the πs−11/2, πd−13/2, and πh−111/2 shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. Two octupole states (s1/2-coupled) are identified and three more states (d3/2-coupled) are tentatively assigned using spin-parity inferences, while further h11/2-coupled states may also have been observed for the first time. Comparisons are made with state-of-the-art large-scale shell model calculations and previous observations made in this region, and systematic underestimation of the energy of the octupole vibrational states is noted. We suggest that in order to resolve the difference in predicted energies for collective and noncollective t=1 states (t is the number of nucleons breaking the 208Pb core), the effect of t=2 mixing may be reduced for octupole-coupled states. The inclusion of mixing with t=0,2,3 excitations is necessary to replicate all t=1 state energies accurately.

Published
2020

22. Competition between Allowed and First-Forbidden β Decay : The Case of Hg208→Tl208

Author

Carroll, R. J., Podolyák, Zs., Berry, T., Grawe, H., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Creswell, J. R., Fraile, L. M., Fahlander, C., Fynbo, H. O. U., Gamba, E. R., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I. H., Lică, R., Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Nita, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Stegemann, S., Stora, T., Sotty, Ch., Tengblad, O., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

Subjects
Nuclear Theory, Nuclear Experiment, ydinfysiikka, nuclear structure and decays
Abstract

The β decay of 208Hg into the one-proton hole, one neutron-particle 20881Tl127 nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z

Published
2020

23. Competition between Allowed and First-Forbidden beta Decay: The Case of Hg-208 -> Tl-2(0)8

Author

Carroll, R. J., Podolyak, Zs, Berry, T., Grawe, H., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Creswell, J. R., Fraile, L. M., Fahlander, C., Fynbo, H. O. U., Gamba, E. R., Gelletly, W., Gerst, R-B, Gorska, M., Gredley, A., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I, Lalkovski, S., Lazarus, I. H., Lica, R., Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I, Mihai, C., Mihai, R. E., Nacher, E., Negret, A., Nita, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V, Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Stegemann, S., Stora, T., Sotty, Ch, Tengblad, O., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., De Witte, H., Carroll, R. J., Podolyak, Zs, Berry, T., Grawe, H., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Creswell, J. R., Fraile, L. M., Fahlander, C., Fynbo, H. O. U., Gamba, E. R., Gelletly, W., Gerst, R-B, Gorska, M., Gredley, A., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I, Lalkovski, S., Lazarus, I. H., Lica, R., Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I, Mihai, C., Mihai, R. E., Nacher, E., Negret, A., Nita, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V, Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Stegemann, S., Stora, T., Sotty, Ch, Tengblad, O., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

Abstract

The beta decay of Hg-208 into the one-proton hole, one neutron-particle Tl-208(81)127 nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N > 126, Z < 82 quadrant of neutron-rich nuclei. While both negative and positive parity states with spin 0 and 1 are expected within the Q(beta) window, only three negative parity states are populated directly in the beta decay. The data provide a unique test of the competition between allowed Gamow-Teller and Fermi, and first-forbidden beta decays, essential for the understanding of the nucleosynthesis of heavy nuclei in the rapid neutron capture process. Furthermore, the observation of the parity changing 0(+) -> 0(-)beta decay where the daughter state is core excited is unique, and can provide information on mesonic corrections of effective operators.

Published
2020

24. Detailed spectroscopy of doubly magic Sn-132

Author

Benito, J., Fraile, L. M., Korgul, A., Piersa, M., Adamska, E., Andreyev, A. N., Alvarez-Rodriguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D., V, Fedosseev, V. N., Fernandez-Martinez, G., Fijalkowska, A., Fila, M., Fynbo, H., Galaviz, D., Galve, P., Garcia-Diez, M., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Ibanez, P., Illana, A., Janas, Z., Jolie, J., Judson, D. S., Karayonchev, V, Kicinska-Habior, M., Konki, J., Kurcewicz, J., Lazarus, I, Lica, R., Lopez-Montes, A., Lund, M., Mach, H., Madurga, M., Marroquin, I, Marsh, B., Martinez, M. C., Mazzocchi, C., Marginean, N., Marginean, R., Miernik, K., Mihai, C., Mihai, R. E., Nacher, E., Negret, A., Olaizola, B., Page, R. D., Paulauskas, S., V, Pascu, S., Perea, A., Pucknell, V, Rahkila, P., Raison, C., Rapisarda, E., Regis, J-M, Rezynkina, K., Rotaru, F., Rothe, S., Sanchez-Parcerisa, D., Sanchez-Tembleque, V, Schomacker, K., Simpson, G. S., Sotty, Ch, Stan, L., Stanoiu, M., Stryjczyk, M., Tengblad, O., Turturica, A., Udias, J. M., Van Duppen, P., Vedia, V., Villa-Abaunza, A., Vinals, S., Walters, W. B., Wadsworth, R., Warr, N., Benito, J., Fraile, L. M., Korgul, A., Piersa, M., Adamska, E., Andreyev, A. N., Alvarez-Rodriguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D., V, Fedosseev, V. N., Fernandez-Martinez, G., Fijalkowska, A., Fila, M., Fynbo, H., Galaviz, D., Galve, P., Garcia-Diez, M., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Ibanez, P., Illana, A., Janas, Z., Jolie, J., Judson, D. S., Karayonchev, V, Kicinska-Habior, M., Konki, J., Kurcewicz, J., Lazarus, I, Lica, R., Lopez-Montes, A., Lund, M., Mach, H., Madurga, M., Marroquin, I, Marsh, B., Martinez, M. C., Mazzocchi, C., Marginean, N., Marginean, R., Miernik, K., Mihai, C., Mihai, R. E., Nacher, E., Negret, A., Olaizola, B., Page, R. D., Paulauskas, S., V, Pascu, S., Perea, A., Pucknell, V, Rahkila, P., Raison, C., Rapisarda, E., Regis, J-M, Rezynkina, K., Rotaru, F., Rothe, S., Sanchez-Parcerisa, D., Sanchez-Tembleque, V, Schomacker, K., Simpson, G. S., Sotty, Ch, Stan, L., Stanoiu, M., Stryjczyk, M., Tengblad, O., Turturica, A., Udias, J. M., Van Duppen, P., Vedia, V., Villa-Abaunza, A., Vinals, S., Walters, W. B., Wadsworth, R., and Warr, N.

Abstract

The structure of the doubly magic Sn-132(50)82 has been investigated at the ISOLDE facility at CERN, populated both by the beta(-) decay of In-132 and beta(-)-delayed neutron emission of In-133. The level scheme of Sn-13(2) is greatly expanded with the addition of 68 gamma transitions and 17 levels observed for the first time in the beta decay. The information on the excited structure is completed by new gamma transitions and states populated in the beta-n decay of In-133. Improved delayed neutron emission probabilities are obtained both for In-132 and In-133. Level lifetimes are measured via the advanced time-delayed beta gamma gamma(t) fast-timing method. An interpretation of the level structure is given based on the experimental findings and the particle-hole configurations arising from core excitations both from the N = 82 and Z = 50 shells, leading to positive- and negative-parity particle-hole multiplets. The experimental information provides new data to challenge the theoretical description of Sn-132.

Published
2020

25. 208Po populated through EC/β+ decay

Author

Brunet, M., primary, Berry, T.A., additional, Podolyák, Zs., additional, Carroll, R. J., additional, Lica, R., additional, Sotty, Ch., additional, Andreyev, A. N., additional, Borge, M. J. G., additional, Cubiss, J. G., additional, Fraile, L. M., additional, Fynbo, H. O. U., additional, Gamba, E., additional, Greenless, P., additional, Harkness-Brennan, L.J., additional, Huyse, M., additional, Judson, D. S., additional, Konki, J., additional, Kurcewicz, J., additional, Lazarus, I., additional, Madurga, M., additional, Marginean, N., additional, Marginean, R., additional, Marroquin, I., additional, Mihai, C., additional, Nácher, E., additional, Negret, A., additional, Pascu, S., additional, Page, R. D., additional, Perea, A., additional, Phrompao, J., additional, Piersa, M., additional, Pucknell, V., additional, Rahkila, P., additional, Rapisarda, E., additional, Regan, P. H., additional, Rotaru, F., additional, Rudigier, M., additional, Shand, C. M., additional, Shearman, R., additional, Simpson, E. C., additional, Stora, T., additional, Tengblad, O., additional, Duppen, P. Van, additional, Vedia, V., additional, Vinals, S., additional, Wadsworth, R., additional, Warr, N., additional, and De Witte, H., additional

Published
2020
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26. Investigation of the Δn = 0 selection rule in Gamow-Teller transitions: The β-decay of 207Hg

Author

Berry, T.A., Podolyák, Zs., Carroll, R.J., Lică, R., Grawe, H., Timofeyuk, N.K., Alexander, T., Andreyev, A.N., Ansari, S., Borge, M.J.G., Creswell, J., Fahlander, C., Fraile, L.M., Fynbo, H.O.U., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, P., Harkness-Brennan, L.J., Huyse, M., Judge, S.M., Judson, D.S., Konki, J., Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I., Lund, M., Madurga, M., Mărginean, N., Mărginean, R., Marroquin, I., Mihai, C., Mihai, R.E., Nácher, E., Nae, S., Negret, A., Niţă, C., Page, R.D., Pascu, S., Patel, Z., Perea, A., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P.H., Rotaru, F., Shand, C.M., Simpson, E.C., Sotty, Ch., Stegemann, S., Stora, T., Tengblad, O., Turturica, A., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P.M., Warr, N., Wearing, F., and De Witte, H.

Published
2019
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27. Competition between Allowed and First-Forbidden β Decay: The Case of Hg208→Tl208

Author

Carroll, R. J., primary, Podolyák, Zs., additional, Berry, T., additional, Grawe, H., additional, Alexander, T., additional, Andreyev, A. N., additional, Ansari, S., additional, Borge, M. J. G., additional, Brunet, M., additional, Creswell, J. R., additional, Fraile, L. M., additional, Fahlander, C., additional, Fynbo, H. O. U., additional, Gamba, E. R., additional, Gelletly, W., additional, Gerst, R.-B., additional, Górska, M., additional, Gredley, A., additional, Greenlees, P. T., additional, Harkness-Brennan, L. J., additional, Huyse, M., additional, Judge, S. M., additional, Judson, D. S., additional, Konki, J., additional, Kurcewicz, J., additional, Kuti, I., additional, Lalkovski, S., additional, Lazarus, I. H., additional, Lică, R., additional, Lund, M., additional, Madurga, M., additional, Marginean, N., additional, Marginean, R., additional, Marroquin, I., additional, Mihai, C., additional, Mihai, R. E., additional, Nácher, E., additional, Negret, A., additional, Nita, C., additional, Pascu, S., additional, Page, R. D., additional, Patel, Z., additional, Perea, A., additional, Phrompao, J., additional, Piersa, M., additional, Pucknell, V., additional, Rahkila, P., additional, Rapisarda, E., additional, Regan, P. H., additional, Rotaru, F., additional, Rudigier, M., additional, Shand, C. M., additional, Shearman, R., additional, Stegemann, S., additional, Stora, T., additional, Sotty, Ch., additional, Tengblad, O., additional, Van Duppen, P., additional, Vedia, V., additional, Wadsworth, R., additional, Walker, P. M., additional, Warr, N., additional, Wearing, F., additional, and De Witte, H., additional

Published
2020
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28. Octupole states in Tl207 studied through β decay

Author

Berry, T. A., primary, Podolyák, Zs., additional, Carroll, R. J., additional, Lică, R., additional, Brown, B. A., additional, Grawe, H., additional, Sotty, Ch., additional, Timofeyuk, N. K., additional, Alexander, T., additional, Andreyev, A. N., additional, Ansari, S., additional, Borge, M. J. G., additional, Brunet, M., additional, Cresswell, J. R., additional, Fahlander, C., additional, Fraile, L. M., additional, Fynbo, H. O. U., additional, Gamba, E., additional, Gelletly, W., additional, Gerst, R.-B., additional, Górska, M., additional, Gredley, A., additional, Greenlees, P., additional, Harkness-Brennan, L. J., additional, Huyse, M., additional, Judge, S. M., additional, Judson, D. S., additional, Konki, J., additional, Kowalska, M., additional, Kurcewicz, J., additional, Kuti, I., additional, Lalkovski, S., additional, Lazarus, I., additional, Lund, M., additional, Madurga, M., additional, Mărginean, N., additional, Mărginean, R., additional, Marroquin, I., additional, Mihai, C., additional, Mihai, R. E., additional, Nácher, E., additional, Negret, A., additional, Nae, S., additional, Niţă, C., additional, Pascu, S., additional, Page, R. D., additional, Patel, Z., additional, Perea, A., additional, Phrompao, J., additional, Piersa, M., additional, Pucknell, V., additional, Rahkila, P., additional, Rapisarda, E., additional, Regan, P. H., additional, Rotaru, F., additional, Rudigier, M., additional, Shand, C. M., additional, Shearman, R., additional, Simpson, E. C., additional, Stegemann, S., additional, Stora, T., additional, Tengblad, O., additional, Turturica, A., additional, Van Duppen, P., additional, Vedia, V., additional, Walker, P. M., additional, Warr, N., additional, Wearing, F. P., additional, and De Witte, H., additional

Published
2020
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29. Investigation of the Delta n=0 selection rule in Gamow-Teller transitions: The beta-decay of Hg-207

Author

Berry, TA, Podolyak, Zs, Carroll, RJ, Lica, R, Grawe, H, Timofeyuk, NK, Alexander, T, Andreyev, AN, Ansari, S, Borge, MJG, Creswell, J, Fahlander, C, Fraile, LM, Fynbo, HOU, Gelletly, W, Gerst, R-B, Gorska, M, Gredley, A, Greenlees, R, Harkness-Brennan, LJ, Huyse, M, Judge, SM, Judson, DS, Konki, J, Kurcewicz, J, Kuti, I, Lalkovski, S, Lazarus, I, Lund, M, Madurga, M, Marginean, N, Marginean, R, Marroquin, I, Mihai, C, Mihai, RE, Nacher, E, Nae, S, Negret, A, Nita, C, Page, RD, Pascu, S, Patel, Z, Perea, A, Pucknell, V, Rahkila, R, Rapisarda, E, Regan, PH, Rotaru, F, Shand, CM, Simpson, EC, Sotty, Ch, Stegemann, S, Stora, T, Tengblad, O, Turturicag, A, Van Duppen, R, Vedia, V, Wadsworth, R, Walker, PM, Warr, N, Wearing, F, and De Witte, H

Published
2019

30. Investigation of the Δn = 0 selection rule in Gamow-Teller transitions : The β-decay of 207Hg

Author

Berry, T. A., Podolyák, Zs., Carroll, R. J., Lică, R., Grawe, H., Timofeyuk, N. K., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Creswell, J., Fynbo, H. O. U., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, Paul, Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, Joonas, Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I., Lund, M., Madurga, M., Mărginean, N., Mărginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Nácher, E., Nae, S., Negret, A., Niţă, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Pucknell, V., Rahkila, Panu, Rapisarda, E., Regan, P. H., Rotaru, F., Shand, C. M., Simpson, E. C., Sotty, Ch., Stegemann, S., Stora, T., Tengblad, O., Turturica, A., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

Subjects
Gamow-Teller transitions, ydinfysiikka
Abstract

Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn = 0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z = 50 (for N > 82) and Z = 82 (for N >126). The level of forbiddenness of the Δn = 1ν1g9/2 → π0g7/2 transition has been investigated from the β− decay of the ground state of 207Hg into the single-proton-hole nucleus 207Tl in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible γ-ray transitions depopulating the π0g7/2−1 state in 207Tl, an upper limit of 3.9 × 10−3% was obtained for the probability of this decay, corresponding to log ft > 8.8 within a 95% confidence limit. This is the most stringent test of the Δn = 0 selection rule to date. peerReviewed

Published
2019

31. beta decay of In-133: gamma emission from neutron-unbound states in Sn-133

Author

Piersa, M., Korgul, A., Fraile, L. M., Benito, J., Adamska, E., Andreyev, A. N., Alvarez-Rodriguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, J. G., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D., V, Fedosseev, V. N., Fernandez-Martinez, G., Fijalkowska, A., Fila, M., Fynbo, H., Galaviz, D., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Illana, A., Janas, Z., Johnston, K., Judson, D. S., Karanyonchev, V, Kicinska-Habior, M., Konki, J., Kurcewicz, J., Lazarus, I, Lica, R., Mach, H., Madurga, M., Marroquin, I, Marsh, B., Martinez, M. C., Mazzocchi, C., Marginean, N., Marginean, R., Miernik, K., Mihai, C., Nacher, E., Negret, A., Olaizola, B., Page, R. D., Paulaskalas, S., Pascu, S., Perea, A., Pucknell, V, Rahkila, P., Rapisarda, E., Regis, J-M, Rotaru, F., Rothe, S., Sanchez-Tembleque, V, Simpson, G., Sotty, Ch, Stan, L., Stanoiu, M., Stryjczyk, M., Tengblad, O., Turturica, A., Udias, J. M., Van Duppen, P., Vedia, V., Villa, A., Vinals, S., Wadsworth, R., Walters, W. B., Warr, N., Piersa, M., Korgul, A., Fraile, L. M., Benito, J., Adamska, E., Andreyev, A. N., Alvarez-Rodriguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, J. G., Costache, C., Cubiss, J. G., Goodacre, T. Day, De Witte, H., Fedorov, D., V, Fedosseev, V. N., Fernandez-Martinez, G., Fijalkowska, A., Fila, M., Fynbo, H., Galaviz, D., Greenlees, P. T., Grzywacz, R., Harkness-Brennan, L. J., Henrich, C., Huyse, M., Illana, A., Janas, Z., Johnston, K., Judson, D. S., Karanyonchev, V, Kicinska-Habior, M., Konki, J., Kurcewicz, J., Lazarus, I, Lica, R., Mach, H., Madurga, M., Marroquin, I, Marsh, B., Martinez, M. C., Mazzocchi, C., Marginean, N., Marginean, R., Miernik, K., Mihai, C., Nacher, E., Negret, A., Olaizola, B., Page, R. D., Paulaskalas, S., Pascu, S., Perea, A., Pucknell, V, Rahkila, P., Rapisarda, E., Regis, J-M, Rotaru, F., Rothe, S., Sanchez-Tembleque, V, Simpson, G., Sotty, Ch, Stan, L., Stanoiu, M., Stryjczyk, M., Tengblad, O., Turturica, A., Udias, J. M., Van Duppen, P., Vedia, V., Villa, A., Vinals, S., Wadsworth, R., Walters, W. B., and Warr, N.

Abstract

Excited states in Sn-133 were investigated through the beta decay of In-133 at the ISOLDE facility. The ISOLDE Resonance Ionization Laser Ion Source (RILIS) provided isomer-selective ionization for In-133, allowing us to study separately, and in detail, the beta-decay branch of In-133 J(pi)= (9/2(+)) ground state and its J(pi) = (1/2(-)) isomer.Thanks to the large spin difference of the two beta-decaying states of In-133, it is possible to investigate separately the lower and higher spin states in the daughter, Sn-133, and thus to probe independently different single-particle and single-hole levels. We report here new gamma transitions observed in the decay of In-133, including those assigned to the deexcitation of the neutron-unbound states.

Published
2019

32. Investigation of the Delta n=0 selection rule in Gamow-Teller transitions: The beta-decay of Hg-207

Author

Berry, T. A., Podolyak, Zs, Carroll, R. J., Lica, R., Grawe, H., Timofeyuk, N. K., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Creswell, J., Fahlander, C., Fraile, L. M., Fynbo, H. O. U., Gelletly, W., Gerst, R-b, Gorska, M., Gredley, A., Greenlees, R., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I, Lalkovski, S., Lazarus, I, Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I, Mihai, C., Mihai, R. E., Nacher, E., Nae, S., Negret, A., Nita, C., Page, R. D., Pascu, S., Patel, Z., Perea, A., Pucknell, V, Rahkila, R., Rapisarda, E., Regan, P. H., Rotaru, F., Shand, C. M., Simpson, E. C., Sotty, Ch, Stegemann, S., Stora, T., Tengblad, O., Turturicag, A., Van Duppen, R., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., De Witte, H., Berry, T. A., Podolyak, Zs, Carroll, R. J., Lica, R., Grawe, H., Timofeyuk, N. K., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Creswell, J., Fahlander, C., Fraile, L. M., Fynbo, H. O. U., Gelletly, W., Gerst, R-b, Gorska, M., Gredley, A., Greenlees, R., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I, Lalkovski, S., Lazarus, I, Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I, Mihai, C., Mihai, R. E., Nacher, E., Nae, S., Negret, A., Nita, C., Page, R. D., Pascu, S., Patel, Z., Perea, A., Pucknell, V, Rahkila, R., Rapisarda, E., Regan, P. H., Rotaru, F., Shand, C. M., Simpson, E. C., Sotty, Ch, Stegemann, S., Stora, T., Tengblad, O., Turturicag, A., Van Duppen, R., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

Abstract

Gamow-Teller beta decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Delta n = 0 requirement plays a major role in the beta decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical r-process pathway below both Z = 50 (for N > 82) and Z = 82 (for N > 126). The level of forbiddenness of the Delta n = 1 nu 1g(9/2) -> pi 0g(7/2) transition has been investigated from the beta(-) decay of the ground state of Hg-207 into the single-proton-hole nucleus Tl-207 in an experiment at the ISOLDE Decay Station. From statistical observational limits on possible gamma-ray transitions depopulating the pi 0g(7/2)(-1) state in Tl-207, an upper limit of 3.9 x 10(-3)% was obtained for the probability of this decay, corresponding to log ft > 8.8 within within a 95% confidence limit. This is the most stringent test of the Delta n = 0 selection rule to date. (C) 2019 The Authors. Published by Elsevier B.V.

Published
2019

33. First Accurate Normalization of the β-delayed α Decay of ^{16}N and Implications for the ^{12}C(α,γ)^{16}O Astrophysical Reaction Rate

Author

Kirsebom, O. S., Tengblad, O., Lica, R., Munch, M., Riisager, K., Fynbo, H. O.U., Borge, M. J.G., Madurga, M., Marroquin, I., Andreyev, A. N., Berry, T. A., Christensen, E. R., Fernández, P. Díaz, Doherty, D. T., Van Duppen, P., Fraile, L. M., Gallardo, M. C., Greenlees, P. T., Harkness-Brennan, L. J., Hubbard, N., Huyse, M., Jensen, J. H., Johansson, H., Jonson, B., Judson, D. S., Konki, J., Lazarus, I., Lund, M. V., Marginean, N., Marginean, R., Perea, A., Mihai, C., Negret, A., Page, R. D., Pucknell, V., Rahkila, P., Sorlin, O., Sotty, C., Swartz, J. A., Sørensen, H. B., Törnqvist, H., Vedia, V., Warr, N., and De Witte, H.

Subjects
astrofysiikka, ydinfysiikka, beta-delayed alpha decay
Abstract

The ^{12}C(α,γ)^{16}O reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced α width, γ_{11}, of the bound 1^{-} level in ^{16}O is particularly important to determine the cross section. The magnitude of γ_{11} is determined via sub-Coulomb α-transfer reactions or the β-delayed α decay of ^{16}N, but the latter approach is presently hampered by the lack of sufficiently precise data on the β-decay branching ratios. Here we report improved branching ratios for the bound 1^{-} level [b_{β,11}=(5.02±0.10)×10^{-2}] and for β-delayed α emission [b_{βα}=(1.59±0.06)×10^{-5}]. Our value for b_{βα} is 33% larger than previously held, leading to a substantial increase in γ_{11}. Our revised value for γ_{11} is in good agreement with the value obtained in α-transfer studies and the weighted average of the two gives a robust and precise determination of γ_{11}, which provides significantly improved constraints on the ^{12}C(α,γ) cross section in the energy range relevant to hydrostatic He burning. ispartof: PHYSICAL REVIEW LETTERS vol:121 issue:14 ispartof: location:United States status: published

Published
2018

34. First Accurate Normalization of the beta-delayed alpha Decay of N-16 and Implications for the C-12(alpha,gamma)O-16 Astrophysical Reaction Rate

Author

Kirsebom, O. S., Tengblad, O., Lica, R., Munch, M., Riisager, K., Fynbo, H. O. U., Borge, M. J. G., Madurga, M., Marroquin, I., Andreyev, A. N., Berry, T. A., Christensen, E. R., Fernandez, P. Diaz, Doherty, D. T., Van Duppen, P., Fraile, L. M., Gallardo, M. C., Greenlees, P. T., Harkness-Brennan, L. J., Hubbard, N., Huyse, M., Jensen, J. H., Johansson, H., Jonson, B., Judson, D. S., Konki, J., Lazarus, I., Lund, M. V., Marginean, N., Marginean, R., Perea, A., Mihai, C., Negret, A., Page, R. D., Pucknell, V., Rahkila, P., Sorlin, O., Sotty, C., Swartz, J. A., Sorensen, H. B., Toernqvist, H., Vedia, V., Warr, N., De Witte, H., Kirsebom, O. S., Tengblad, O., Lica, R., Munch, M., Riisager, K., Fynbo, H. O. U., Borge, M. J. G., Madurga, M., Marroquin, I., Andreyev, A. N., Berry, T. A., Christensen, E. R., Fernandez, P. Diaz, Doherty, D. T., Van Duppen, P., Fraile, L. M., Gallardo, M. C., Greenlees, P. T., Harkness-Brennan, L. J., Hubbard, N., Huyse, M., Jensen, J. H., Johansson, H., Jonson, B., Judson, D. S., Konki, J., Lazarus, I., Lund, M. V., Marginean, N., Marginean, R., Perea, A., Mihai, C., Negret, A., Page, R. D., Pucknell, V., Rahkila, P., Sorlin, O., Sotty, C., Swartz, J. A., Sorensen, H. B., Toernqvist, H., Vedia, V., Warr, N., and De Witte, H.

Abstract

The C-12(alpha,gamma)O-16 reaction plays a central role in astrophysics, but its cross section at energies relevant for astrophysical applications is only poorly constrained by laboratory data. The reduced a width, gamma(11), of the bound 1(-) level in O-16 is particularly important to determine the cross section. The magnitude of gamma(11) is determined via sub-Coulomb a-transfer reactions or the beta-delayed a decay of N-16, but the latter approach is presently hampered by the lack of sufficiently precise data on the beta-decay branching ratios. Here we report improved branching ratios for the bound 1(-) level [b(beta,11) = (5.02 +/- 0.10) x 10(-2)] and for beta-delayed alpha emission [b(beta alpha) = (1.59 +/- 0.06) x 10(-5)]. Our value for b(beta alpha) is 33% larger than previously held, leading to a substantial increase in gamma(11). Our revised value for gamma(11) is in good agreement with the value obtained in a-transfer studies and the weighted average of the two gives a robust and precise determination of gamma(11), which provides significantly improved constraints on the C-12(alpha,gamma) cross section in the energy range relevant to hydrostatic He burning.

Published
2018

35. INVESTIGATION OF LOW-LYING STATES IN Sn-133 POPULATED IN THE beta DECAY OF In-133 USING ISOMER-SELECTIVE LASER IONIZATION

Author

Piersa, M., Korgul, A., Fraile, L. M., Benito, J., Adamska, E., Alvarez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, G., Costache, C., Goodacre, T. Day, Fedorov, D. V., Fedosseev, V. N., Fernandez-Martinez, G., Fila, M., Galaviz, D., Grzywacz, R., Henrich, C., Illana, A., Janas, Z., Johnston, K., Karanyonchev, V., Kicinska-Habior, M., Lica, R., Madurga, M., Marroquin, I., Marsh, B., Martinez, C., Mazzocchi, C., Miernik, K., Mihai, R., Olaizola, B., Paulaskalas, S., Regis, J-M, Rothe, S., Sanchez-Tembleque, V., Simpson, G., Sotty, Ch., Stan, L., Stanoiu, M., Stryjczyk, M., Turturica, A., Udias, J. M., Vedia, V., Villa, A., Walters, W. B., Piersa, M., Korgul, A., Fraile, L. M., Benito, J., Adamska, E., Alvarez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, G., Costache, C., Goodacre, T. Day, Fedorov, D. V., Fedosseev, V. N., Fernandez-Martinez, G., Fila, M., Galaviz, D., Grzywacz, R., Henrich, C., Illana, A., Janas, Z., Johnston, K., Karanyonchev, V., Kicinska-Habior, M., Lica, R., Madurga, M., Marroquin, I., Marsh, B., Martinez, C., Mazzocchi, C., Miernik, K., Mihai, R., Olaizola, B., Paulaskalas, S., Regis, J-M, Rothe, S., Sanchez-Tembleque, V., Simpson, G., Sotty, Ch., Stan, L., Stanoiu, M., Stryjczyk, M., Turturica, A., Udias, J. M., Vedia, V., Villa, A., and Walters, W. B.

Abstract

Excited states in the neutron-rich isotope Sn-133 were studied via the beta decay of In-133. Isomer selective ionization using the ISOLDE RILIS enabled the beta decays of In-133(gs) (I-pi = 9/2(+)) and In-133m (I-pi = 1/2(-)) to be studied independently for the first time. A description of the experimental setup at the ISOLDE Decay Station is presented together with preliminary results from the experiment.

Published
2018

36. First Accurate Normalization of the β -delayed α Decay of N16 and Implications for the C12(α,γ)O16 Astrophysical Reaction Rate

Author

Kirsebom, O. S., primary, Tengblad, O., additional, Lica, R., additional, Munch, M., additional, Riisager, K., additional, Fynbo, H. O. U., additional, Borge, M. J. G., additional, Madurga, M., additional, Marroquin, I., additional, Andreyev, A. N., additional, Berry, T. A., additional, Christensen, E. R., additional, Fernández, P. Díaz, additional, Doherty, D. T., additional, Van Duppen, P., additional, Fraile, L. M., additional, Gallardo, M. C., additional, Greenlees, P. T., additional, Harkness-Brennan, L. J., additional, Hubbard, N., additional, Huyse, M., additional, Jensen, J. H., additional, Johansson, H., additional, Jonson, B., additional, Judson, D. S., additional, Konki, J., additional, Lazarus, I., additional, Lund, M. V., additional, Marginean, N., additional, Marginean, R., additional, Perea, A., additional, Mihai, C., additional, Negret, A., additional, Page, R. D., additional, Pucknell, V., additional, Rahkila, P., additional, Sorlin, O., additional, Sotty, C., additional, Swartz, J. A., additional, Sørensen, H. B., additional, Törnqvist, H., additional, Vedia, V., additional, Warr, N., additional, and De Witte, H., additional

Published
2018
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37. Plan de negocio de una start-up universitaria dedicada al diseño de objetos de uso cotidiano que se pueden producir mediante la artesanía, la auto fabricación y la producción en serie industrial

Author

Universitat Politècnica de Catalunya. Departament d'Expressió Gràfica a l'Enginyeria, Fernández Sánchez, Joaquín, Marroquin I Romero-fiol, Victor, Universitat Politècnica de Catalunya. Departament d'Expressió Gràfica a l'Enginyeria, Fernández Sánchez, Joaquín, and Marroquin I Romero-fiol, Victor

Abstract

Este proyecto pretende desarrollar un plan de negocio que facilite la comercialización de productos de mobiliario minimalista-ergonómico y objetos de tipo wearable diseñados en la universidad con el inconveniente de tener bajo valor diferencial por su sencilla concepción, y por lo tanto, generalmente, con dificultad para convertirse en una realidad y salir al mercado. Con el objetivo de solventar este problema, se propondrá la creación de una start-up (UNIGAD) que, mediante el e-commerce, haga de puente directo entre los proyectos concebidos en la universidad y el mercado. La start-up se sustentará sobre dos pilares: el primero será aprovechar la capacidad creativa de la comunidad universitaria como fuente de ideas e innovación, vinculándose a través de las fórmulas de colaboración previstas (spin-off) a la investigación, el desarrollo y la innovación (I+D+i) de la empresa; y el segundo será compensar la falta de valor diferencial de esos productos con un valor añadido que será aportado con calidad en el diseño y utilidad del producto, y con eficiencia en los procesos de fabricación, encargando la producción a diferentes colectivos profesionales como artesanos, pequeños industriales, talleres de auto fabricación o círculos de trabajo colaborativo. El business plan tiene como objetivo demostrar la viabilidad de la idea de negocio planteada. Se empezará con un exhaustivo estudio de mercado para analizar posibles competidores y tendencias del sector. A continuación, se explicará en profundidad la estrategia de marketing que se perseguirá, seguida de un plan de operaciones en el que se analizarán en detalle las acciones necesarias para el lanzamiento del producto ofrecido. Finalmente, después de definir el plan de recursos humanos y de analizar el marco legal en el que UNIGAD se verá inmersa, se concluirá con un plan financiero con el que se argumentará mediante un estudio económico la viabilidad económica de la empresa.

Published
2017

38. Electron capture of $^8$B into highly excited states in $^8$Be

Author

Borge, MJG, Cederkall, J, Diaz Fernandez, P, Fraile, L, Fynbo, H, Heinz, A, Jensen, J, Johansson, H, Jonson, B, Kirsebom, O, Lica, R, Lindberg, S, Marroquin, I, Munch, M, Nacher, E, Nilsson, T, Perea, A, Refsgaard, J, Riisager, K, Snall, J, and Tengblad, O

Subjects
Detectors and Experimental Techniques
Published
2016

39. Beta-delayed proton emission from Mg-20

Author

Lund, MV, Andreyev, A, Borge, MJG, Cederkall, J, De Witte, H, Fraile, LM, Fynbo, HOU, Greenlees, PT, Harkness-Brennan, LJ, Howard, AM, Huyse, M, Jonson, B, Judson, DS, Kirsebom, OS, Konki, J, Kurcewicz, J, Lazarus, I, Lica, R, Lindberg, S, Madurga, M, Marginean, N, Marginean, R, Marroquin, I, Mihai, C, Munch, M, Nacher, E, Negret, A, Nilsson, T, Page, RD, Pascu, S, Perea, A, Pucknell, V, Rahkila, P, Rapisarda, E, Riisager, K, Rotaru, F, Sotty, C, Stanoiu, M, Tengblad, O, Turturica, A, Van Duppen, P, Vedia, V, Wadsworth, R, Warr, N, and Collaboration, IDS

Published
2016

40. Fast-timing study of the l-forbidden 1/2(+) -> 3/2(+) M1 transition in Sn-129

Author

Lica, R, Mach, H, Fraile, LM, Gargano, A, Borge, MJG, Marginean, N, Sotty, CO, Vedia, V, Andreyev, AN, Benzoni, G, Bomans, P, Borcea, R, Coraggio, L, Costache, C, Flavigny, F, Fynbo, H, Gaffney, Liam, Greenlees, PT, Harkness-Brennan, LJ, Huyse, Mark, Ibanez, P, Judson, DS, Konki, J, Korgul, A, Kroell, T, Kurcewicz, J, Lalkovski, S, Lazarus, I, Lund, MV, Madurga, M, Marginean, R, Marroquin, I, Mihai, C, Mihai, RE, Morales, AI, Nacher, E, Negret, A, Page, RD, Pakarinen, J, Pascu, S, Paziy, V, Perea, A, Perez-Liva, M, Picado, E, Pucknell, V, Rapisarda, E, Rahkila, P, Rotaru, F, Swartz, JA, Tengblad, O, Van Duppen, Piet, Wadsworth, R, Walters, WB, and Warr, N

Abstract

© 2016 authors. Published by the American Physical Society. The levels in Sn129 populated from the β- decay of In129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2+ state and the 3/2+ ground state in Sn129 are expected to have configurations dominated by the neutron s1/2 (l=0) and d3/2 (l=2) single-particle states, respectively. Consequently, these states should be connected by a somewhat slow l-forbidden M1 transition. Using fast-timing spectroscopy we have measured the half-life of the 1/2+ 315.3-keV state, T1/2= 19(10) ps, which corresponds to a moderately fast M1 transition. Shell-model calculations using the CD-Bonn effective interaction, with standard effective charges and g factors, predict a 4-ns half-life for this level. We can reconcile the shell-model calculations to the measured T1/2 value by the renormalization of the M1 effective operator for neutron holes. We express our deep appreciation to the late Professor Henryk Mach, who was the initiator of this investigation. He was an inspiring collaborator, mentor, and leader in developing the βγ γ (t) fast-timing technique. His memory and accomplishments will always be with us. This work was partially supported by the Spanish MINECO through Projects No. FPA2012-32443, No. FPA2013-41267-P, and CPAN Consolider (Project No. CSD-2007-00042), and by Romanian IFA Grant CERN/ISOLDE. It was also partly funded by the NuPNET network FATIMA (PRI-PIMNUP-2011-1338), by FWO-Vlaanderen (Belgium), by GOA/2010/010 (BOF KU Leuven), and by the Interuniversity Attraction Poles Programme initiated by the Belgian Science PolicyOffice (BriX network P7/12). Support from Grupo de F´ısica Nuclear (GFN-UCM), Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale (PRIN) Grant No. 2001024324 01302, German BMBF under Contracts No. 05P12PKFNE and No. 05P15PKCIA, the U.K. Science and Technology Facilities Council, and the European Union Seventh Framework through ENSAR (Contract No. 262010) is also acknowledged. Fasttiming electronics were provided by the Fast Timing Collaboration, the ISOLDE Decay Station collaboration, and MASTICON. ispartof: PHYSICAL REVIEW C vol:93 issue:4 status: published

Published
2016

41. Fast-timing study of the l-forbidden 1/2(+) -> 3/2(+) M1 transition in Sn-129

Author

Lica, R., Mach, H., Fraile, L. M., Gargano, A., Borge, M. J. G., Marginean, N., Sotty, C. O., Vedia, V., Andreyev, A. N., Benzoni, G., Bomans, P., Borcea, R., Coraggio, L., Costache, C., De Witte, H., Flavigny, F., Fynbo, H., Gaffney, L. P., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Ibanez, P., Judson, D. S., Konki, J., Korgul, A., Kroell, T., Kurcewicz, J., Lalkovski, S., Lazarus, I., Lund, M. V., Madurga, M., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Morales, A. I., Nacher, E., Negret, A., Page, R. D., Pakarinen, J., Pascu, S., Paziy, V., Perea, A., Perez-Liva, M., Picado, E., Pucknell, V., Rapisarda, E., Rahkila, P., Rotaru, F., Swartz, J. A., IDS Collaboration, and Helsinki Institute of Physics

Subjects
NEUTRON-RICH NUCLEI, PICOSECOND LIFETIME MEASUREMENTS, 114 Physical sciences
Abstract

The levels in Sn-129 populated from the beta(-) decay of In-129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2(+) state and the 3/2(+) ground state in 129Sn are expected to have configurations dominated by the neutron s(1/2) (l = 0) and d(3/2) (l = 2) single-particle states, respectively. Consequently, these states should be connected by a somewhat slow l-forbidden M1 transition. Using fast-timing spectroscopy we havemeasured the half-life of the 1/2(+) 315.3-keV state, T-1/2 = 19(10) ps, which corresponds to a moderately fast M1 transition. Shell-model calculations using the CD-Bonn effective interaction, with standard effective charges and g factors, predict a 4-ns half-life for this level. We can reconcile the shell-model calculations to the measured T-1/2 value by the renormalization of the M1 effective operator for neutron holes.

Published
2016

42. Fast-timing study of the l -forbidden 1/2+→3/2+ M1 transition in Sn 129

Author

Licǎ, R., Mach, H., Fraile, L. M., Gargano, A., Borge, M. J. G., Mǎrginean, N., Sotty, C. O., Vedia, V., Andreyev, A.N., Benzoni, G., Bomans, P., Borcea, R., Coraggio, L., Costache, C., De Witte, H., Flavigny, F., Fynbo, H., Gaffney, L. P., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M, Ibáñez, P., Judson, D. S., Konki, J., Korgul, A., Kröll, T., Kurcewicz, J., Lalkovski, S., Lazarus, I., Lund, M. V., Madurga, M., Mǎrginean, R., Marroquin, I., Mihai, C, Mihai, R. E., Morales, A. I., Nacher, E., Negret, A., Page, R. D., Pakarinen, J., Pascu, S., Paziy, V., Perea, A., Pérez-Liva, M., Picado, E., Pucknell, V., Rapisarda, E., Rahkila, P., Rotaru, F., and Swartz, Jacobus Andreas

Published
2016

43. Fast-timing study of the l-forbidden 1/2(+) -> 3/2(+) M1 transition in Sn-129

Author

University of Helsinki, Helsinki Institute of Physics, Lica, R., Mach, H., Fraile, L. M., Gargano, A., Borge, M. J. G., Marginean, N., Sotty, C. O., Vedia, V., Andreyev, A. N., Benzoni, G., Bomans, P., Borcea, R., Coraggio, L., Costache, C., De Witte, H., Flavigny, F., Fynbo, H., Gaffney, L. P., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Ibanez, P., Judson, D. S., Konki, J., Korgul, A., Kroell, T., Kurcewicz, J., Lalkovski, S., Lazarus, I., Lund, M. V., Madurga, M., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Morales, A. I., Nacher, E., Negret, A., Page, R. D., Pakarinen, J., Pascu, S., Paziy, V., Perea, A., Perez-Liva, M., Picado, E., Pucknell, V., Rapisarda, E., Rahkila, P., Rotaru, F., Swartz, J. A., Tengblad, O., Van Duppen, P., Vidal, M., Wadsworth, R., Walters, W. B., Warr, N., IDS Collaboration, University of Helsinki, Helsinki Institute of Physics, Lica, R., Mach, H., Fraile, L. M., Gargano, A., Borge, M. J. G., Marginean, N., Sotty, C. O., Vedia, V., Andreyev, A. N., Benzoni, G., Bomans, P., Borcea, R., Coraggio, L., Costache, C., De Witte, H., Flavigny, F., Fynbo, H., Gaffney, L. P., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Ibanez, P., Judson, D. S., Konki, J., Korgul, A., Kroell, T., Kurcewicz, J., Lalkovski, S., Lazarus, I., Lund, M. V., Madurga, M., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Morales, A. I., Nacher, E., Negret, A., Page, R. D., Pakarinen, J., Pascu, S., Paziy, V., Perea, A., Perez-Liva, M., Picado, E., Pucknell, V., Rapisarda, E., Rahkila, P., Rotaru, F., Swartz, J. A., Tengblad, O., Van Duppen, P., Vidal, M., Wadsworth, R., Walters, W. B., Warr, N., and IDS Collaboration

Abstract

The levels in Sn-129 populated from the beta(-) decay of In-129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2(+) state and the 3/2(+) ground state in 129Sn are expected to have configurations dominated by the neutron s(1/2) (l = 0) and d(3/2) (l = 2) single-particle states, respectively. Consequently, these states should be connected by a somewhat slow l-forbidden M1 transition. Using fast-timing spectroscopy we havemeasured the half-life of the 1/2(+) 315.3-keV state, T-1/2 = 19(10) ps, which corresponds to a moderately fast M1 transition. Shell-model calculations using the CD-Bonn effective interaction, with standard effective charges and g factors, predict a 4-ns half-life for this level. We can reconcile the shell-model calculations to the measured T-1/2 value by the renormalization of the M1 effective operator for neutron holes.

Published
2016

44. Beta-delayed proton emission from Mg-20

Author

Lund, M. V., Andreyev, A., Borge, M. J. G., Cederkall, J., De Witte, H., Fraile, L. M., Fynbo, H. O. U., Greenlees, P. T., Harkness-Brennan, L. J., Howard, A. M., Huyse, M., Jonson, B., Judson, D. S., Kirsebom, O. S., Konki, J., Kurcewicz, J., Lazarus, I., Lica, R., Lindberg, S., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Munch, M., Nacher, E., Negret, A., Nilsson, T., Page, R. D., Pascu, S., Perea, A., Pucknell, V., Rahkila, P., Rapisarda, E., Riisager, K., Rotaru, F., Sotty, C., Stanoiu, M., Tengblad, O., Turturica, A., Van Duppen, P., Vedia, V., Wadsworth, R., Warr, N., Lund, M. V., Andreyev, A., Borge, M. J. G., Cederkall, J., De Witte, H., Fraile, L. M., Fynbo, H. O. U., Greenlees, P. T., Harkness-Brennan, L. J., Howard, A. M., Huyse, M., Jonson, B., Judson, D. S., Kirsebom, O. S., Konki, J., Kurcewicz, J., Lazarus, I., Lica, R., Lindberg, S., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Munch, M., Nacher, E., Negret, A., Nilsson, T., Page, R. D., Pascu, S., Perea, A., Pucknell, V., Rahkila, P., Rapisarda, E., Riisager, K., Rotaru, F., Sotty, C., Stanoiu, M., Tengblad, O., Turturica, A., Van Duppen, P., Vedia, V., Wadsworth, R., and Warr, N.

Abstract

Beta-delayed proton emission from Mg-20 has been measured at ISOLDE, CERN, with the ISOLDE Decay Station (IDS) setup including both charged-particle and gamma-ray detection capabilities. A total of 27 delayed proton branches were measured including seven so far unobserved. An updated decay scheme, including three new resonances above the proton separation energy in Na-20 and more precise resonance energies, is presented. Beta-decay feeding to two resonances above the Isobaric Analogue State (IAS) in Na-20 is observed. This may allow studies of the 4032.9(2.4) keV resonance in Ne-19 through the beta decay of Mg-20, which is important for the astrophysically relevant reaction O-15(alpha,gamma)Ne-19. Beta-delayed protons were used to obtain a more precise value for the half-life of Mg-20, 91.4(1.0)ms.

Published
2016

45. Multi-particle Emission from ${^{31}}$Ar at ISOLDE

Author

Marroquin, I., primary, Borge, M.J.G., additional, Ciemny, A.A., additional, de Witte, H., additional, Fraile, L.M., additional, Fynbo, H.O.U., additional, Garzón-Camacho, A., additional, Howard, A., additional, Johansson, H., additional, Jonson, B., additional, Kirsebom, O.S., additional, Koldste, G.T., additional, Lica, R., additional, Lund, M.V., additional, Madurga, M., additional, Mazzocchi, C., additional, Mihai, C., additional, Munch, M., additional, Nae, S.A., additional, Nacher, E., additional, Negret, A., additional, Nilsson, T., additional, Perea, A., additional, Refsgaard, J., additional, Riisager, K., additional, Rapisarda, E., additional, Sotty, C., additional, Stanoiu, M., additional, Tengblad, O., additional, Turturica, A.E., additional, and Vedia, M.V., additional

Published
2016
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46. MULTI-PARTICLE EMISSION FROM 31Ar AT ISOLDE.

Author

MARROQUIN, I., BORGE, M. J. G., CIEMNY, A. A., DE WITTE, H., FRAILE, L. M., FYNBO, H. O. U., GARZÓN-CAMACHO, A., HOWARD, A., JOHANSSON, H., JONSON, B., KIRSEBOM, O. S., KOLDSTE, G. T., LICA, R., LUND, M. V., MADURGA, M., MAZZOCCHI, C., MIHAI, C., MUNCH, M., NAE, S. A., and NACHER, E.

Subjects
*PARTICLE emissions, *ASTROPHYSICS, *PARTICLE physics, *RESONANCE, *PROTONS
Abstract

A multi-particle decay experiment was successfully performed at the ISOLDE Decay Station. In this new permanent station, devoted to β-decay studies, the novel MAGISOL Si-Plugin Chamber was installed to study the exotic decay modes of the proton drip-line nucleus 31Ar. The motivation was to search for β3p and β3p channels, as well as to provide information on resonances in 30S and 29P relevant for the astrophysical rp-process. Description of the experimental set-up and preliminary results are presented. [ABSTRACT FROM AUTHOR]

Published
2016
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47. 208Po populated through EC/β+decay

Author

Brunet, M., Berry, T. A., Podolyák, Z., Carroll, R. J., Lica, R., Sotty, C., Andreyev, A. N., Borge, M. J. G., Cubiss, J. G., Fraile, L. M., Fynbo, H. O. U., Gamba, E., Greenless, P., Harkness-Brennan, L. J., Huyse, M., Judson, D. S., Konki, J., Kurcewicz, J., Lazarus, I., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Nácher, E., Alexandru Negret, Pascu, S., Page, R. D., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Simpson, E. C., Stora, T., Tengblad, O., Duppen, P. V., Vedia, V., Vinals, S., Wadsworth, R., Warr, N., and Witte, H.

48. Competition between Allowed and First-Forbidden β Decay: The Case of Hg 208 → Tl 208

Author

Carroll, R. J., Podolyák, Zs., Berry, T., Grawe, H., Alexander, T., Andreyev, A. N., Ansari, S., Borge, M. J. G., Brunet, M., Creswell, J. R., Fraile, L. M., Fahlander, C., Fynbo, H. O. U., Gamba, E. R., Gelletly, W., Gerst, R.-B., Górska, M., Gredley, A., Greenlees, P. T., Harkness-Brennan, L. J., Huyse, M., Judge, S. M., Judson, D. S., Konki, J., Kurcewicz, J., Kuti, I., Lalkovski, S., Lazarus, I. H., Lică, R., Lund, M., Madurga, M., Marginean, N., Marginean, R., Marroquin, I., Mihai, C., Mihai, R. E., Nácher, E., Negret, A., Nita, C., Pascu, S., Page, R. D., Patel, Z., Perea, A., Phrompao, J., Piersa, M., Pucknell, V., Rahkila, P., Rapisarda, E., Regan, P. H., Rotaru, F., Rudigier, M., Shand, C. M., Shearman, R., Stegemann, S., Stora, T., Sotty, Ch., Tengblad, O., Van Duppen, P., Vedia, V., Wadsworth, R., Walker, P. M., Warr, N., Wearing, F., and De Witte, H.

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49. Study of multi-neutron emission in the $\beta$-decay of $^{11}$Li

Author

Delaunay, F., Achouri, N. L., Algora, A., Assié, M., Balibrea, J., Banerjee, K., Bhattacharya, C., Borge, M. J. G., Cano-Ott, D., Fernández-Domínguez, B., Fraile, L. M., Gibelin, J., Lund, M. V., Madurga, M., Marqués, F. M., Marroquin, I., Martínez, T., Mendoza, E., Orr, N. A., Pârlog, M., Pereira-López, X., Pestel, V., Riisager, K., Santos, C., Matthieu Sénoville, Tengblad, O., Vedia, V., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département de Physique Nucléaire (ex SPhN) (DPHN), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, Nuclear Experiment
Abstract

The kinematics of two-neutron emission following the $\beta$-decay of $^{11}$Li was investigated for the first time by detecting the two neutrons in coincidence and by measuring their angle and energy. An array of liquid-scintillator neutron detectors was used to reject cosmic-ray and $\gamma$-ray backgrounds by pulse-shape discrimination. Cross-talk events in which two detectors are fired by a single neutron were rejected using a filter tested on the $\beta$-1n emitter $^9$Li. A large cross-talk rejection rate is obtained ($> 95 \%$) over most of the energy range of interest. Application to $^{11}$Li data leads to a significant number of events interpreted as $\beta$-2n decay. A discrete neutron line at $\approx$ 2 MeV indicates sequential two-neutron emission, possibly from the unbound state at 10.6 MeV excitation energy in $^{11}$Be., Comment: 4 pages, Proceedings of the EuNPC2018 Conference

50. First Accurate Normalization of the $\beta$-delayed $\alpha$ Decay of $^{16}$N and Implications for the $^{12}$C$(\alpha,\gamma)^{16}$O Astrophysical Reaction Rate

Author

Kirsebom, O. S., Tengblad, O., Lica, R., Munch, M., Riisager, K., Fynbo, H. O. U., Borge, M. J. G., Madurga, M., Marroquin, I., Andreyev, A. N., Berry, T. A., Christensen, E. R., Fernández, P. Díaz, Doherty, D. T., Van Duppen, P., Fraile, L. M., Gallardo, M. C., Greenlees, P. T., Harkness-Brennan, L. J., Hubbard, N., Huyse, M., Jensen, J. H., Johansson, H., Jonson, B., Judson, D. S., Konki, J., Lazarus, I., Lund, M. V., Marginean, N., Marginean, R., Perea, A., Mihai, C., Negret, A., Page, R. D., Pucknell, V., Rahkila, P., Sorlin, O., Sotty, C., Swartz, J. A., Sørensen, H. B., Törnqvist, H., Vedia, V., Warr, N., and De Witte, H.

Subjects
3. Good health
Abstract

Physical review letters 121(14), 142701 (2018). doi:10.1103/PhysRevLett.121.142701, Published by APS, College Park, Md.

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