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46 results on '"Rajabali M.M."'

1. Scattering of halo nuclei on heavy targets at energies around the Coulomb barrier: The case of 11Be on 197Au

Author

Pesudo V., Borge M.J.G., Moro A.M., Lay J.A., Nácher E., Gómez-Camacho J., Tengblad O., Acosta L., Alcorta M., Alvarez M.A.G., Andreoiu C., Bender P.C., Braid R., Cubero M., Di Pietro A., Fernández-García J.P., Figuera P., Fisichella M., Fulton B.R., Garnsworthy A.B., Hackman G., Hager U., Kirsebom O.S., Kuhn K., Lattuada M., Marquínez-Durán G., Martel I., Miller D., Moukaddam M., O'Malley P.D., Perea A., Rajabali M.M., Sánchez-Benítez A.M., Sarazin F., Scuderi V., Svensson C.E., Unsworth C., and Wang Z.M.

Subjects
Physics, QC1-999
Abstract

This work reports on the scattering of 11Be on 197Au at energies around and below the Coulomb barrier. By experimentally identifying the elastic scattering, inelastic scattering and breakup channels, and comparing them with different calculations, valuable information on the 11Be structure and its B(E1) distribution to the continuum are obtained. On top of that, a deeper understanding of the scattering process at low energies is achieved for reactions of this kind, making these studies extendable to other loosely-bound systems like 17,19C

Published
2017
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2. Nuclear structure of 122Xe studied via high-statistics β+/EC-decay

Author

Jigmeddorj B., Garrett P.E., Andreoiu C., Ball G.C., Bruhn T., Cross D.S., Garnsworthy A.B., Hackman G., Hadinia B., Moukaddam M., Park J., Pore J.L., Radich A.J., Rajabali M.M., Rand E.T., Rizman U., Svensson C.E., Voss P., Wang Z.M., Wood J.L., and Yates S.W.

Subjects
Physics, QC1-999
Abstract

The nuclear structure of 122Xe has been investigated with measurements of the β+/EC decay of 122Cs with the 8 π γ-ray spectrometer at the TRIUMF-ISAC facility. The data collected have enabled the determination of relative B(E2) values of some low-energy transitions, and the in-band transitions of the excited 0+ bands have been observed. As a result, the 2+ rotational band members for the 0+2 and 0+3 states have been firmly identified.

Published
2016
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3. Magnetic moment measurement in 72Zn using the Transient Field technique and Coulomb excitation in inverse kinematics

Author

Illana Sisón A., Jungclaus A., Orlandi R., Perea A., Briz J.A., Bauer C., Gernhäuser R., Leske J., Mücher D., Pakarinen J., Pietralla N., Rajabali M.M., Seiler D., and Stahl C.

Subjects
Physics, QC1-999
Abstract

The g factor of the first excited 2+ state of 72Zn has been measured using the Low Velocity Transient Field (LVTF) technique in combination with Coulomb excitation in inverse kinematics. The aim of the experiment was to test the viability of this method when applied to short-lived radioactive ISOL beams, in particular in comparison to the alternative High Velocity Transient Field (HVTF) technique using fragment beams. The result obtained for g(2+) in 72Zn in the present experiment follows the trend observed for the lighter stables Zn isotopes.

Published
2014
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6. The GRIFFIN facility for Decay-Spectroscopy studies at TRIUMF-ISAC

Author

Garnsworthy, A.B., Svensson, C.E., Bowry, M., Dunlop, R., MacLean, A.D., Olaizola, B., Smith, J.K., Ali, F.A., Andreoiu, C., Ash, J.E., Ashfield, W.H., Ball, G.C., Ballast, T., Bartlett, C., Beadle, Z., Bender, P.C., Bernier, N., Bhattacharjee, S.S., Bidaman, H., Bildstein, V., Bishop, D., Boubel, P., Braid, R., Brennan, D., Bruhn, T., Burbadge, C., Cheeseman, A., Chester, A., Churchman, R., Ciccone, S., Caballero-Folch, R., Cross, D.S., Cruz, S., Davids, B., Varela, A. Diaz, Dillmann, I., Dunlop, M.R., Evitts, L.J., Garcia, F.H., Garrett, P.E., Georges, S., Gillespie, S., Gudapati, R., Hackman, G., Hadinia, B., Hallam, S., Henderson, J., Ilyushkin, S.V., Jigmeddorj, B., Kilic, A.I., Kisliuk, D., Kokke, R., Kuhn, K., Krücken, R., Kuwabara, M., Laffoley, A.T., Lafleur, R., Leach, K.G., Leslie, J.R., Linn, Y., Lim, C., MacConnachie, E., Mathews, A.R., McGee, E., Measures, J., Miller, D., Mills, W.J., Moore, W., Morris, D., Morrison, L.N., Moukaddam, M., Natzke, C.R., Ortner, K., Padilla-Rodal, E., Paetkau, O., Park, J., Patel, H.P., Pearson, C.J., Peters, E., Peters, E.E., Pore, J.L., Radich, A.J., Rajabali, M.M., Rand, E.T., Raymond, K., Rizwan, U., Ruotsalainen, P., Saito, Y., Sarazin, F., Shaw, B., Smallcombe, J., Southall, D., Starosta, K., Ticu, M., Timakova, E., Turko, J., Umashankar, R., Unsworth, C., Wang, Z.M., Whitmore, K., Wong, S., Yates, S.W., Zganjar, E.F., and Zidar, T.

Published
2019
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7. High-Statistics β+/EC-Decay Study of 122Xe

Author

Jigmeddorj, B., Garrett, P.E., Andreoiu, C.A., Ball, G.C., Bruhn, T., Cross, D.S., Garnsworthy, A.B., Hadinia, B., Moukaddam, M., Park, J., Pore, J.L., Radich, A.J., Rajabali, M.M., Rand, E.T., Rizwan, U., Svensson, C.E., Voss, P., Wang, Z., Wood, J.L., and Yates, S.W.

Published
2017
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9. New Opportunities in Decay Spectroscopy with the GRIFFIN and DESCANT Arrays

Author

Bildstein, V., Andreoiu, C., Ball, G.C., Ballast, T., Bartlett, C., Bender, P.C., Bernier, N., Bianco, L., Bishop, D., Brennan, D., Bruhn, T., Cheeseman, A., Churchman, R., Ciccone, S., Davids, B., Demand, G., Dillmann, I., Garnsworthy, A.B., Garrett, P.E., Georges, S., Hackman, G., Hadinia, B., Kokke, R., Krücken, R., Linn, Y., Lim, C., Martin, J.-P., Miller, D., Mills, W.J., Morrison, L.N., Ohlmann, C.A., Park, J., Pearson, C.J., Pore, J.L., Rajabali, M.M., Rand, E.T., Rizwan, U., Sarazin, F., Shaw, B., Starosta, K., Svensson, C.E., Sumithrarachchi, C., Unsworth, C., Voss, P., Wang, Z.M., Williams, J., Wong, J., and Wong, S.

Published
2015
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10. Single neutron transfer on Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts

Author

Lotay, G., Henderson, J., Catford, W.N., Ali, F.A., Berean, J., Bernier, N., Bhattacharjee, S.S., Bowry, M., Caballero-Folch, R., Davids, B., Drake, T.E., Garnsworthy, A.B., Ghazi Moradi, F., Gillespie, S.A., Greaves, B., Hackman, G., Hallam, S., Hymers, D., Kasanda, E., Levy, D., Luna, B.K., Mathews, A., Meisel, Z., Moukaddam, M., Muecher, D., Olaizola, B., Orr, N.A., Patel, H.P., Rajabali, M.M., Saito, Y., Smallcombe, J., Spencer, M., Svensson, C.E., Whitmore, K., and Williams, M.

Abstract

We present new experimental measurements of resonance strengths in the astrophysical $^{23}$Al(p,γ)$^{24}$Si reaction, constraining the pathway of nucleosynthesis beyond $^{22}$Mg in X-ray burster scenarios. Specifically, we have performed the first measurement of the (d,p) reaction using a radioactive beam of $^{23}$Ne to explore levels in $^{24}$Ne, the mirror analog of $^{24}$Si. Four strong single-particle states were observed and corresponding neutron spectroscopic factors were extracted with a precision of ∼20%. Using these spectroscopic factors, together with mirror state identifications, we have reduced uncertainties in the strength of the key ℓ = 0 resonance at Er = 157 keV, in the astrophysical $^{23}$Al(p,γ) reaction, by a factor of 4. Our results show that the $^{22}$Mg(p,γ)$^{23}$Al(p,γ) pathway dominates over the competing $^{22}$Mg(α,p) reaction in all but the most energetic X-ray burster events (T>0.85 GK), significantly affecting energy production and the preservation of hydrogen fuel.

Published
2022

11. Single neutron transfer on 23Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts

Author

Lotay, G., primary, Henderson, J., additional, Catford, W.N., additional, Ali, F.A., additional, Berean, J., additional, Bernier, N., additional, Bhattacharjee, S.S., additional, Bowry, M., additional, Caballero-Folch, R., additional, Davids, B., additional, Drake, T.E., additional, Garnsworthy, A.B., additional, Ghazi Moradi, F., additional, Gillespie, S.A., additional, Greaves, B., additional, Hackman, G., additional, Hallam, S., additional, Hymers, D., additional, Kasanda, E., additional, Levy, D., additional, Luna, B.K., additional, Mathews, A., additional, Meisel, Z., additional, Moukaddam, M., additional, Muecher, D., additional, Olaizola, B., additional, Orr, N.A., additional, Patel, H.P., additional, Rajabali, M.M., additional, Saito, Y., additional, Smallcombe, J., additional, Spencer, M., additional, Svensson, C.E., additional, Whitmore, K., additional, and Williams, M., additional

Published
2022
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12. The TIGRESS Integrated Plunger ancillary systems for electromagnetic transition rate studies at TRIUMF

Author

Voss, P., Henderson, R., Andreoiu, C., Ashley, R., Austin, R.A.E., Ball, G.C., Bender, P.C., Bey, A., Cheeseman, A., Chester, A., Cross, D.S., Drake, T.E., Garnsworthy, A.B., Hackman, G., Holland, R., Ketelhut, S., Kowalski, P., Krücken, R., Laffoley, A.T., Leach, K.G., Miller, D., Mills, W.J., Moukaddam, M., Pearson, C.J., Pore, J., Rand, E.T., Rajabali, M.M., Rizwan, U., Shoults, J., Starosta, K., Svensson, C.E., Tardiff, E., Unsworth, C., Van Wieren, K., Wang, Z.-M., and Williams, J.

Published
2014
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13. The Collinear Resonance Ionization Spectroscopy (CRIS) experimental setup at CERN-ISOLDE

Author

Cocolios, T.E., Al Suradi, H.H., Billowes, J., Budinčević, I., de Groote, R.P., De Schepper, S., Fedosseev, V.N., Flanagan, K.T., Franchoo, S., Garcia Ruiz, R.F., Heylen, H., Le Blanc, F., Lynch, K.M., Marsh, B.A., Mason, P.J.R., Neyens, G., Papuga, J., Procter, T.J., Rajabali, M.M., Rossel, R.E., Rothe, S., Simpson, G.S., Smith, A.J., Strashnov, I., Stroke, H.H., Verney, D., Walker, P.M., Wendt, K.D.A., and Wood, R.T.

Published
2013
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14. Spin-aligned RI beams via two-step fragmentation reactions

Author

Ichikawa, Y., Ueno, H., Ishii, Y., Furukawa, T., Yoshimi, A., Kameda, D., Watanabe, H., Aoi, N., Asahi, K., Balabanski, D.L., Chevrier, R., Daugas, J.M., Fukuda, N., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Kubo, T., Nanao, T., Ohnishi, T., Suzuki, K., Tsuchiya, M., Takeda, H., and Rajabali, M.M.

Published
2013
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15. Spectroscopy of $^{99}\mathrm{Cd}$ and $^{101}\mathrm{In}$ from ${\beta}$ decays of $^{99}\mathrm{In}$ and $^{101}\mathrm{Sn}$

Author

PARK, J., KRÜCKEN, R., BLAZHEV, A., LUBOS, D., GERNHÄUSER, R., LEWITOWICZ, M., NISHIMURA, S., AHN, D.S., BABA, H., BLANK, B., BOUTACHKOV, P., BROWNE, F., ČELIKOVIĆ, I., DE FRANCE, G., DOORNENBAL, P., FAESTERMANN, T., FANG, Y., FUKUDA, N., GIOVINAZZO, J., GOEL, N., GÓRSKA, M., GRAWE, H., ILIEVA, S., INABE, N., ISOBE, T., JUNGCLAUS, A., KAMEDA, D., KIM, G.D., KIM, Y.K., KOJOUHAROV, I., KUBO, T., KURZ, N., KWON, Y.K., LORUSSO, G., MOSCHNER, K., MURAI, D., NISHIZUKA, I., PATEL, Z., RAJABALI, M.M., RICE, S., SAKURAI, H., SCHAFFNER, H., SHIMIZU, Y., SINCLAIR, L., SÖDERSTRÖM, P.A., STEIGER, K., SUMIKAMA, T., SUZUKI, H., TAKEDA, H., WANG, Z., WATANABE, H., WU, J., XU, Z.Y., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), TRIUMF, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

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

International audience; We report on new γ-ray spectroscopy results from β decays of In99 and Sn101. 30 new γ rays were observed following the β decay of In99, and inconsistencies in the literature with respect to the γ rays following the β decay of Sn101 were addressed with two confirmed cases and two new transitions. The experimental γ-ray energies, intensities, and coincidence relationships are discussed with shell model calculations, where theoretical β-decay branching ratios from the parent nuclei and γ-ray cascades of excited states from the daughter nuclei were combined to generate hypothetical βγ spectra and βγγ coincidence matrices. The most intense β-delayed γ-ray branches in both Cd99 and In101 were well reproduced with this approach, and several γ rays were assigned to new excited states based on their good agreement with shell model predictions. (APS)

Published
2020

16. Spectroscopy of Cd 99 and in 101 from β decays of in 99 and Sn 101

Author

Park, J., Krücken, R., Blazhev, A., Lubos, D., Gernhäuser, R., Lewitowicz, M., Nishimura, S., Ahn, D.S., Baba, H., Blank, B., Boutachkov, P., Browne, F., Celikovic, I., De France, G., Doornenbal, P., Faestermann, T., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Górska, M., Grawe, H., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, Andrea, Kameda, D., Kim, G.D., Kim, Y.K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y.K., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M.M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L., Söderström, P.A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., RIKEN Nishina Center for Accelerator-Based Science, University of Tokyo, Ministry of Education, Science and Technology (South Korea), National Research Foundation of Korea, Japan Society for the Promotion of Science, German Research Foundation, Federal Ministry of Education and Research (Germany), Ministerio de Economía y Competitividad (España), Natural Sciences and Engineering Research Council of Canada, and French-Japanese International Associated Laboratory for Nuclear Structure Problems

Abstract

11 pags., 10 figs., 3 tabs., We report on new γ-ray spectroscopy results from β decays of In99 and Sn101. 30 new γ rays were observed following the β decay of In99, and inconsistencies in the literature with respect to the γ rays following the β decay of Sn101 were addressed with two confirmed cases and two new transitions. The experimental γ-ray energies, intensities, and coincidence relationships are discussed with shell model calculations, where theoretical β-decay branching ratios from the parent nuclei and γ-ray cascades of excited states from the daughter nuclei were combined to generate hypothetical βγ spectra and βγγ coincidence matrices. The most intense β-delayed γ-ray branches in both Cd99 and In101 were well reproduced with this approach, and several γ rays were assigned to new excited states based on their good agreement with shell model predictions., The authors would like to thank the personnel at the RIKEN Nishina Center for providing the exotic radioactive isotope beam with record intensities. This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. We acknowledge the EUROBALL Owners Committee for loaning the germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors of EURICA. Support for the WAS3ABi setup was provided by the Rare Isotope Science Project, funded by the Ministry of Education, Science and Technology (MEST) and National Research Foundation (NRF) of Korea, as well as KAKENHI (Grant No. 25247045) of Japan Society for the Promotion of Science (JSPS). This work was supported by the Institute for Basic Science (IBS-R031-D1). The authors acknowledge also the support of the DFG cluster of excellence “Origin and Structure of the Universe,” German BMBF under Contracts No. 05P15PKFNA and No. 05P19PKFNA, and the Spanish Ministerio de Economía y Competitividad via Project No. FPA2017-84756-C4-2-P. Part of the research was funded by the Natural Sciences and Engineering Research Council (NSERC) of Canada and also supported by FJNSP LIA (French-Japanese International Associated Laboratory for Nuclear Structure Problems)

Published
2020

17. Improved Value for the Gamow-Teller Strength of the ^{100}Sn Beta Decay

Author

Lubos, D., Park, J., Faestermann, T., Gernhäuser, R., Krücken, R., Lewitowicz, M., Nishimura, S., Sakurai, H., Ahn, D.S., Baba, H., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Čeliković, I., De France, G., Doornenbal, P., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Górska, M., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, Y.K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y.K., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M.M., Rice, S., Schaffner, H., Shimizu, Y., Sinclair, L., Söderström, P.A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Wang, Z., Warr, N., Watanabe, H., Wu, J., Xu, Z., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Physics
Abstract

International audience; A record number of Sn100 nuclei was detected and new isotopic species toward the proton dripline were discovered at the RIKEN Nishina Center. Decay spectroscopy was performed with the high-efficiency detector arrays WAS3ABi and EURICA. Both the half-life and the β-decay end point energy of Sn100 were measured more precisely than the literature values. The value and the uncertainty of the resulting strength for the pure 0+→1+ Gamow-Teller decay was improved to BGT=4.4-0.7+0.9. A discrimination between different model calculations was possible for the first time, and the level scheme of In100 is investigated further.

Published
2019

18. Toward the limit of nuclear binding on the $N=Z$ line: Spectroscopy of $^{96}$Cd

Author

Davies, P.J., Park, J., Grawe, H., Wadsworth, R., Gernhäuser, R., Krücken, R., Nowacki, F., Ahn, D.S., Ameil, F., Baba, H., Bäck, T., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Celikovic, I., Dewald, M., Doornenbal, P., Faestermann, T., Fang, Y., De France, G., Fukuda, N., Gengelbach, A., Gerl, J., Giovinazzo, J., Go, S., Goel, N., Górska, M., Gregor, E., Hotaka, H., Ilieva, S., Inabe, N., Isobe, T., Jenkins, D.G., Jolie, J., Jung, H.S., Jungclaus, A., Kameda, D., Kim, G.D., Kim, Y.-K., Kojouharov, I., Kubo, T., Kurz, N., Lewitowicz, M., Lorusso, G., Lubos, D., Maier, L., Merchan, E., Moschner, K., Murai, D., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nishizuka, I., Patel, Z., Pietralla, N., Rajabali, M.M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L.F., Söderström, P.-A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Taprogge, J., Thöle, P., Valder, S., Wang, Z., Warr, N., Watanabe, H., Werner, V., Wu, J., Xu, Z.Y., Yagi, A., Yoshinaga, K., Zhu, Y., Université de Strasbourg (UNISTRA), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Nuclear Structure
Abstract

International audience; A γ -decaying isomeric state (τ1/2 = 197$^{+19}_{−17}$ ns) has been identified in 96Cd, which is one α particle away from the last known bound N = Z nucleus, 100Sn. Comparison of the results with shell-model calculations has allowed a tentative experimental level scheme to be deduced and the isomer to be interpreted as a medium-spin negativeparity spin trap based on the coupling of isoscalar (T = 0) and isovector (T = 1) neutron-proton pairs. The data also suggest evidence for the population of a 9+ T = 1 state, which is predicted by shell-model calculations to be yrast. Such a low-lying T = 1 state, which is unknown in lighter mass even-even self-conjugate nuclei, can also be interpreted in terms of the coupling of T = 0 and T = 1 neutron-proton pairs.

Published
2019

19. New and comprehensive $\beta$- and $\beta{p}$-decay spectroscopy results in the vicinity of $^{100}\mathrm{Sn}$

Author

Park, J., Krücken, R., Lubos, D., Gernhäuser, R., Lewitowicz, M., Nishimura, S., Ahn, D.S., Baba, H., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Celikovic, I., De France, G., Doornenbal, P., Faestermann, T., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Górska, M., Grawe, H., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G.D., Kim, Y.K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y.K., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M.M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L., Söderström, P.A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Wang, Z., Watanabe, H., Wu, J., Xu, Z.Y., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Structure
Abstract

International audience; A decay spectroscopy experiment on proton-rich nuclei in the vicinity of the doubly magic Sn100 was carried out at RIKEN Nishina Center. More than 20 nuclei with 43≤Z≤50 and N≤51, produced by fragmentation reactions were investigated via analyses of β-decay, βp-decay, and subsequent γ-ray data. Owing to higher statistics, the precision on the half-lives of many of the ground states and isomers was improved. β-decay endpoint energies of 11 states in 8 nuclei were measured for the first time, and the corresponding QEC and excitation energies were generally consistent with various mass models. Many β-delayed proton emission branching ratios were measured either for the first time or with higher precision compared to literature values, and some of them differed by more than 2σ. Many of the large discrepancies were associated with nuclei with long-lived isomeric states, highlighting large systematic uncertainties involved in these measurements. Twenty-five new γ rays were observed, and ten new states are proposed with unambiguous excitation energies, spins, and parities. Most of the energies of the excited states were consistent within 300 keV or 20%, whichever was greater, compared to shell model predictions in the proton/neutron (p1/2,g9/2) model space assuming a Sr76 core. A signature of a new (1/2−) isomer in Cd97 with T1/2=0.73(7) s was found, in good agreement with shell model predictions.

Published
2019

20. $\beta$ decays of the heaviest $N=Z-1$ nuclei and proton instability of $^{97}\mathrm{In}$

Author

Park, J., Krücken, R., Lubos, D., Gernhäuser, R., Lewitowicz, M., Nishimura, S., Ahn, D.S., Baba, H., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Celikovic, I., De France, G., Doornenbal, P., Faestermann, T., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Górska, M., Grawe, H., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G.D., Kim, Y.K., Kojouharov, I., Kubo, T., Kurz, N., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M.M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L., Söderström, P.A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Wang, Z., Watanabe, H., Wu, J., Xu, Z.Y., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; We report on new or more precise half-lives, β-decay endpoint energies, and β-delayed proton emission branching ratios of Pd91, Cd95, In97, and Sn99. The measured values are consistent with known mirror transitions in lighter Tz=−1/2 nuclei, shell-model calculations, and various mass models. In addition to the β-decaying (9/2+) ground state, circumstantial evidence for a short-lived, proton-emitting isomer with spin (1/2−) was found in In97. Based on the experimental data, a semiempirical theory on proton emission, and shell-model calculations, the proton separation energy of the In97 ground state was determined to be −0.10±0.19 MeV. The existence of the short-lived, proton-unstable (1/2−) isomer in In97 establishes Cd96 as an rp-process waiting point.

Published
2018

21. Segmented YSO scintillation detectors as a new β-implant detection tool for decay spectroscopy in fragmentation facilities

Author

Yokoyama, R., primary, Singh, M., additional, Grzywacz, R., additional, Keeler, A., additional, King, T.T., additional, Agramunt, J., additional, Brewer, N.T., additional, Go, S., additional, Heideman, J., additional, Liu, J., additional, Nishimura, S., additional, Parkhurst, P., additional, Phong, V.H., additional, Rajabali, M.M., additional, Rasco, B.C., additional, Rykaczewski, K.P., additional, Stracener, D.W., additional, Tain, J.L., additional, Tolosa-Delgado, A., additional, Vaigneur, K., additional, and Wolińska-Cichocka, M., additional

Published
2019
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22. Properties of $\gamma$-decaying isomers and isomeric ratios in the $^{100}$Sn region

Author

Park, J., Krücken, R., Lubos, D., Gernhäuser, R., Lewitowicz, M., Nishimura, S., Ahn, D.S., Baba, H., Blank, B., Blazhev, A., Boutachkov, P., Browne, F., Celikovic, I., De France, G., Doornenbal, P., Faestermann, T., Fang, Y., Fukuda, N., Giovinazzo, J., Goel, N., Górska, M., Grawe, H., Ilieva, S., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G.D., Kim, Y.-K., Kojouharov, I., Kubo, T., Kurz, N., Lorusso, G., Moschner, K., Murai, D., Nishizuka, I., Patel, Z., Rajabali, M.M., Rice, S., Sakurai, H., Schaffner, H., Shimizu, Y., Sinclair, L., Söderström, P.-A., Steiger, K., Sumikama, T., Suzuki, H., Takeda, H., Wang, Z., Watanabe, H., Wu, J., Xu, Z.Y., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; Half-lives and energies of γ rays emitted in the decay of isomeric states of nuclei in the vicinity of the doubly magic Sn100 were measured in a decay spectroscopy experiment at Rikagaku Kenkyusho (The Institute of Physical and Chemical Research) of Japan Nishina Center. The measured half-lives, some with improved precision, are consistent with literature values. Three new results include a 55-keV E2γ ray from a new (4+) isomer with T1/2=0.23(6)μs in Rh92, a 44-keV E2γ ray from the (15+) isomer in Ag96, and T1/2(6+)=13(2) ns in Cd98. Shell-model calculations of electromagnetic transition strengths in the (p1/2,g9/2) model space agree with the experimental results. In addition, experimental isomeric ratios were compared to the theoretical predictions derived with an abrasion-ablation model and the sharp cutoff model. The results agreed within a factor of 2 for most isomers. From the nonobservation of time-delayed γ rays in Sn100, new constraints on the T1/2, γ-ray energy, and internal conversion coefficients are proposed for the hypothetical isomer in Sn100.

Published
2017

23. Nuclear charge radii of potassium isotopes beyond N=28

Author

Kreim, K., Bissell, M.L., Papuga, J., Blaum, K., De Rydt, M., Garcia Ruiz, R.F., Goriely, S., Heylen, H., Kowalska, M., Neugart, R., Neyens, G., Nörtershäuser, W., Rajabali, M.M., Sánchez Alarcón, R., Stroke, H.H., and Yordanov, D.T.

Subjects
Nuclear and High Energy Physics
Published
2014
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24. High-precision quadrupole moment reveals significant intruder component in $^{33}_{13}$Al$_{20}$ ground state

Author

Heylen, H., De Rydt, M., Neyens, G., Bissell, M.L., Caceres, L., Chevrier, Rémy, Daugas, J.M., Ichikawa, Y., Ishibashi, Y., Kamalou, O., Mertzimekis, T.J., Morel, Pierre, Papuga, J., Poves, A., Rajabali, M.M., Stodel, C., Thomas, J.C., Ueno, H., Utsuno, Y., Yoshida, N., Yoshimi, A., Instituut voor Kern- en Stralingsfysica (K.U. LEUVEN), Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), RIKEN Nishina Center for Accelerator-Based Science [Wako] (RIKEN RNC), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), National and Kapodistrian University of Athens (NKUA), Instituto de Física Teórica UAM/CSIC (IFT), Universidad Autonoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Center for Nuclear Study, The University of Tokyo (UTokyo), Department of Physics, Tokyo Institute of Technology (TOKYO INSTITUTE OF TECHNOLOGY), Tokyo Institute of Technology [Tokyo] (TITECH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Universidad Autónoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)

Subjects
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

6 pages, 4 figures. Accepted for publication in Physical Review C, expérience GANIL/LISE; International audience; The electric quadrupole moment of the 33Al20 ground state, located at the border of the island of inversion, was obtained using continuous-beam beta-detected nuclear quadrupole resonance (beta-NQR). From the measured quadrupole coupling constant Q = 2.31(4) MHz in an alpha-Al2O3 crystal, a precise value for the electric quadrupole moment is extracted: Qs= 141(3) mb. A comparison with large-scale shell model calculations shows that 33Al has at least 50% intruder configurations in the ground state wave function, favoring the excitation of two neutrons across the N = 20 shell gap. 33Al therefore clearly marks the gradual transition north of the deformed Na and Mg nuclei towards the normal Z>14 isotopes.

Published
2016

25. High-precision quadrupole moment reveals significant intruder component in Al20 1333 ground state

Author

Heylen, H. De Rydt, M. Neyens, G. Bissell, M.L. Caceres, L. Chevrier, R. Daugas, J.M. Ichikawa, Y. Ishibashi, Y. Kamalou, O. Mertzimekis, T.J. Morel, P. Papuga, J. Poves, A. Rajabali, M.M. Stödel, C. Thomas, J.C. Ueno, H. Utsuno, Y. Yoshida, N. Yoshimi, A.

Subjects
Nuclear Theory
Abstract

The electric quadrupole moment of the Al201333 ground state, located at the border of the island of inversion, was obtained using continuous-beam β-detected nuclear quadrupole resonance (β-NQR). From the measured quadrupole coupling constant νQ=2.31(4) MHz in an α-Al2O3 crystal, a precise value for the electric quadrupole moment is extracted: QsAl33=141(3) mb. A comparison with large-scale shell model calculations shows that Al33 has at least 50% intruder configurations in the ground state wave function, favoring the excitation of two neutrons across the N=20 shell gap. Al33 therefore clearly marks the gradual transition north of the deformed Na and Mg nuclei towards the normal Z≥14 isotopes. © 2016 American Physical Society.

Published
2016

26. Scattering Of The Halo Nucleus 11Be On A 197Au Target At Energies Around The Coulomb Barrier

Author

G. Borge, Maria J, primary, Pesudo, Vicente, additional, Nácher, Enrique, additional, Tengblad., Olof, additional, Cubero., Mario, additional, Perea, Angel, additional, Moro, A. M., additional, Lay, Josè A., additional, Gómez-Camacho., Joaquin., additional, Alvarez, M. A. G., additional, Fernandez-Garcia, Juan Pablo, additional, Di Prieto, A., additional, Figuera, Pierpaolo, additional, Fisichella., M., additional, Lattuada., M., additional, Scuderi, V., additional, Marquínez-Durán, Gloria, additional, Martel., Ismael, additional, Sánchez-Benítez, Angel M., additional, Alcorta., Martin, additional, Bender, P. C., additional, Braid., R., additional, Garnsworthy, A. B., additional, Hackman., Gregory, additional, Miller., D., additional, Moukaddam., M., additional, Rajabali., M.M., additional, Unsworth., C., additional, Wang, Z.M., additional, Fulton, Brian R., additional, Hager, U., additional, Kirsebom, Oliver, additional, Kuhn., K., additional, O'Malley., P.D., additional, Sarazin, Frederique, additional, and Svensson, C.E., additional

Published
2017
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27. $\beta $ Decays of $^{92}$Rb, $^{96\mathrm {gs}}$Y, and $^{142}$Cs Measured with the Modular Total Absorption Spectrometer and the Influence of $\gamma $ Multiplicity on Total Absorption Spectrometry Measurements

Author

Rasco, B.C., primary, Fijałkowska, A., additional, Rykaczewski, K.P., additional, Wolińska-Cichocka, M., additional, Karny, M., additional, Grzywacz, R.K., additional, Goetz, K.C., additional, Gross, C.J., additional, Stracener, D.W., additional, Zganjar, E.F., additional, Batchelder, J.C., additional, Blackmon, J.C., additional, Brewer, N.T., additional, King, T., additional, Miernik, K., additional, Paulauskas, S.V., additional, Rajabali, M.M., additional, and Winger, J.A., additional

Published
2017
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28. Analogous intruder behavior near Ni, Sn, and Pb isotopes

Author

Cartegni, L., Seweryniak, D., Abromeit, B., Grzywacz, R., Ilyushkin, S., Chiara, C.J., Suchyta, S., Ayres, A., Madurga, M., Janssens, R.V.F., Rajabali, M.M., Carpenter, M.P., Miller, D., Paulauskas, S.V., Harker, J., Chen, J., Kondev, F.G., Liddick, S.N., Larson, N., Bingham, C.R., Crawford, H.L., Bey, A., Padgett, S., Zhu, S., Darby, I.G., Hoffman, C.R., Rykaczewski, K., and Walters, W.B.

Abstract

Near shell closures, the presence of unexpected states at low energies provides a critical test of our understanding of the atomic nucleus. New measurements for the N=42 isotones Co2769 and Cu2971, along with recent data and calculations in the Ni isotopes, establish a full set of complementary, deformed, intruder states astride the closed-shell Ni28 isotopes. Nuclei with a one-proton hole or one-proton particle adjacent to Z=28 were populated in β-decay experiments and in multinucleon transfer reactions. A β-decaying isomer, with a 750(250)-ms half-life, has been identified in Co422769. It likely has low spin and accompanies the previously established 7/2- state. Complementary data for the levels of isotonic Cu422971 support the presence of a deformed, ΔJ=1 band built on the proton intruder 7/2- level at 981 keV. These data, together with recent studies of lower-mass Co and Cu isotopes and extensive work near Ni68, support the view that intruder states based on particle-hole excitations accompany all closed proton shells with Z≥28.

Published
2015
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29. High-Precision Half-Life Measurements for the Superallowed $\beta$+ emitter $^{10}$C

Author

Dunlop, M.R., Andreoiu, C., Austin, R.A.E., Ball, G.C., Ballast, T., Bender, P., Bildstein, V., S. Cross, D., Diaz Varela, A., Dunlop, R., B. Garnsworthy, A., E. Garrett, P., Grinyer, G.F., Hadinia, B., Jamieson, D.S., Laffoley, A.T., Leslie, J.R., Maclean, A., Miller, D., Mills, B., Park, J., Radich, A.J., Rajabali, M.M., Rand, E., Svensson, C.E., Unsworth, C., Valencik, A., Wang, Z.M., Zganjar, E.F., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Lion, Michel

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2014

30. High-Precision Half-Life Measurements for the Superallowed Fermi $\beta$+ Emitters $^{14}$O and $^{18}$Ne

Author

Laffoley, A.T., Andreoiu, C., Austin, R.A.E., Ball, G.C., Bender, P.C., Bildstein, V., Blank, Bertram, Bouzomita, H., Cross, D.S., Deng, G., Diaz Varela, A., Dunlop, M.R., Dunlop, R., Finlay, P., Garnsworthy, A.B., Garrett, P., Giovinazzo, J., Grinyer, G.F., Hackman, G., Hadinia, B., Jamieson, D.S., Jigmeddorj, B., Ketelhut, S., Leach, K.G., Leslie, J.R., Mills, B., Moukaddam, M., Radich, A.J., Rajabali, M.M., Rand, E.T., Svensson, C.E., Tardiff, E., Thomas, J.C., Voss, P., Unsworth, C., Lion, Michel, Noyaux exotiques (NEX), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2014

31. Nuclear structure of122Xe studied via high-statisticsβ+/EC-decay

Author

Jigmeddorj, B., primary, Garrett, P.E., additional, Andreoiu, C., additional, Ball, G.C., additional, Bruhn, T., additional, Cross, D.S., additional, Garnsworthy, A.B., additional, Hackman, G., additional, Hadinia, B., additional, Moukaddam, M., additional, Park, J., additional, Pore, J.L., additional, Radich, A.J., additional, Rajabali, M.M., additional, Rand, E.T., additional, Rizman, U., additional, Svensson, C.E., additional, Voss, P., additional, Wang, Z.M., additional, Wood, J.L., additional, and Yates, S.W., additional

Published
2016
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32. Is the 7/2(1)(-) Isomer State of S-43 Spherical?

Author

Chevrier, Rémy, Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Hishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., Yoshimi, A., DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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)-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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and 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)

Subjects
NEUTRON-RICH NUCLEI, N=28 SHELL CLOSURE, ISLAND, STABILITY, BORDER, quadrupole-moment, n=28 shell closure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 43S isomer, QUADRUPOLE-MOMENT, pyrite, FE-57, neutron-rich nuclei, fragmentation, INVERSION, FRAGMENTATION, fe-57, PYRITE
Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2(1)(-) isomeric state in S-43(16)27 [E* = 320.5(5) keV, T-1/2 = 415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, vertical bar Q(s) vertical bar = 23(3) efm(2), is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured vertical bar Q(s) vertical bar, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape. ispartof: Physical Review Letters vol:108 issue:16 ispartof: location:United States status: published

Published
2012

33. Nuclear mean-square charge radii of $^{63,64,66,68−82}$Ga nuclei: No anomalous behavior at N=32

Author

Procter, T.J., Billowes, Jonathan, Bissell, M.L., Blaum, K., Charlwood, F.C., Cheal, B., Flanagan, Kieran, Forest, David, Fritzsche, S., Geppert, Ch, Heylen, H., Kowalska, M., Kreim, K., Krieger, A., Krämer, J., Lynch, K.M., Mané, E., Moore, Iain, Neugart, R., Neyens, G., Nörtershäuser, W., Papuga, J., Rajabali, M.M., Stroke, H.H., Vingerhoets, P., Yordanov, D.T., and Žáková, M.

Subjects
nuclear spectroscopy, ydinrakenne, accelerator-based physics, nuclear structure, ydinspektroskopia, ddc:530, Physics::Atomic Physics, Nuclear Experiment, ydinfysiikka, kiihdytinpohjainen fysiikka
Abstract

Collinear laser spectroscopy was performed on the 63,64,66,68−82Ga isotopes with neutron numbers from N = 32 to N = 51. These measurements were carried out at the ISOLDE radioactive ion beam facility at CERN. Here we present the nuclear mean-square charge radii extracted from the isotope shifts and, for the lighter isotopes, new spin and moment values. New ground-state nuclear spin and moments were extracted from the hyperfine spectra of 63,70Ga, measured on an atomic transition in the neutral atom. The ground-state spin of 63Ga is determined to be I = 3/2. Analysis of the trend in the change in mean-square charge radii of the gallium isotopes demonstrates that there is no evidence of anomalous charge radii behavior in gallium in the region of N = 32. peerReviewed

Published
2012

34. Ground-state spins and moments of 72,74,76,78Ga nuclei

Author

Mane, E., Cheal, B., Billowes, J., Bissell, M.L., Blaum, K., Charlwood, F.C., Flanagan, K.T., Forest, D.H., Geppert, Ch., Kowalska, M., Krieger, A., Kramer, J., Moore, I.D., Neugart, R., Neyens, G., Nortershauser, W., Rajabali, M.M., Sanchez, R., Schug, M., Stroke, H.H., Vingerhoets, P., Yordanov, D.T., Zakova, M., Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and 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)

Subjects
GA-74, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], XX, Nuclear Experiment, QUADRUPOLE-MOMENTS
Abstract

Laser spectroscopy was performed on the 72,74,76,78Ga isotopes at On-Line Isotope Mass Separator (ISOLDE) facility, CERN. Ground-state nuclear spins and moments were extracted from the measured hyperfine spectra. The results are compared to shell-model calculations, which provide a detailed probe of the nuclear wave function. The spin is established from the shape of the hyperfine structure and the parity inferred from a comparison of shell-model calculations with the measured nuclear moments. The ground states of 76,78Ga are both assigned a spin and parity of Iπ=2−, while 74Ga is tentatively assigned as Iπ=3−. For 72Ga, the results are consistent with the previous I=3 assignment.

Published
2011

35. Nuclear charge radii of potassium isotopes beyond N = 28

Author

Kreim, Kim, Bissell, M.L., Papuga, J., Blaum, Klaus, De Rydt, Marieke, Garcia Ruiz, R.F., Goriely, Stéphane, Heylen, H., Kowalska, Magdalena, Neugart, Rainer, Neyens, G., Nörtershäuser, Wilfried, Rajabali, M.M., Sánchez Alarcón, Rodolfo, Stroke, Henry, Yordanova, D.T., Kreim, Kim, Bissell, M.L., Papuga, J., Blaum, Klaus, De Rydt, Marieke, Garcia Ruiz, R.F., Goriely, Stéphane, Heylen, H., Kowalska, Magdalena, Neugart, Rainer, Neyens, G., Nörtershäuser, Wilfried, Rajabali, M.M., Sánchez Alarcón, Rodolfo, Stroke, Henry, and Yordanova, D.T.

Abstract

We report on the measurement of optical isotope shifts for 38, 39, 42, 44, 46–51 K relative to 47 K from which changes in the nuclear mean square charge radii across the N = 28 shell closure are deduced. The investigation was carried out by bunched-beam collinear laser spectroscopy at the CERN-ISOLDE radioactive ion-beam facility. Mean square charge radii are now known from 37K to 51K, covering all ν f7/2-shell as well as all νp3/2-shell nuclei. These measurements, in conjunction with those of Ca, Cr, Mn and Fe, provide a first insight into the Z dependence of the evolution of nuclear size above the shell closure at N = 28, info:eu-repo/semantics/published

Published
2014

36. Magnetic moment measurement in Zn-72 using the Transient Field technique and Coulomb excitation in inverse kinematics

Author

Ministerio de Ciencia e Innovación (España), Illana, A., Jungclaus, Andrea, Orlandi, R., Perea, Ángel, Briz, José Antonio, Bauer, C., Gernhäuser, R., Leske, J., Mücher, J., Pakarinen, J., Pietralla, N., Rajabali, M.M., Seiler, D., Stahl, C., Ministerio de Ciencia e Innovación (España), Illana, A., Jungclaus, Andrea, Orlandi, R., Perea, Ángel, Briz, José Antonio, Bauer, C., Gernhäuser, R., Leske, J., Mücher, J., Pakarinen, J., Pietralla, N., Rajabali, M.M., Seiler, D., and Stahl, C.

Abstract

The g factor of the first excited 2+state of 72Zn has been measured using the Low Velocity Transient Field (LVTF) technique in combination with Coulomb excitation in inverse kinematics. The aim of the experiment was to test the viability of this method when applied to short-lived radioactive ISOL beams, in particular in comparison to the alternative High Velocity Transient Field (HVTF) technique using fragment beams. The result obtained for g(2+) in 72Zn in the present experiment follows the trend observed for the lighter stables Zn isotopes. C Owned by the authors, published by EDP Sciences, 2014

Published
2014

37. Magnetic and quadrupole moments of neutron deficient 58–62Cu isotopes

Author

Vingerhoets, P., Flanagan, K.T., Billowes, J., Bissell, M.L., Blaum, K., Cheal, B., De Rydt, M., Forest, D.H., Geppert, Ch., Honma, M., Kowalska, M., Krämer, J., Kreim, K., Krieger, A., Neugart, R., Neyens, G., Nörtershäuser, W., Papuga, J., Procter, T.J., Rajabali, M.M., Sánchez, R., Stroke, H.H., and Yordanov, D.T.

Published
2011
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38. Decay studies of very neutron rich nuclei near 78Ni

Author

Winger, J.A., Ilyushkin, S.V., Korgul, A., Gross, C.J., Rykaczewski, K.P., Batchelder, J.C., Goodin, C., Grzywacz, R., Hamilton, J.H., Krolas, W., Liddick, S.N., Mazzocchi, C., Nelson, C., Padgett, S., Piechaczek, A., Rajabali, M.M., Shapira, D., and Zganjar, E.F.

Published
2008

39. Reaction of the Halo Nucleus $^{11}$Be on Heavy Targets at Energies Around the Coulomb Barrier

Author

Pesudo, V., primary, Borge, M.J.G., additional, Moro, A.M., additional, Nacher, E., additional, Acosta, L., additional, Alcorta, M., additional, Alvarez, M.A.G., additional, Ball, G.C., additional, Bender, P.C., additional, Braid, R., additional, Cubero, M., additional, [Pietro]di Pietro, A., additional, Fernandez-Garcia, J.P., additional, Figuera, P., additional, Fisichella, M., additional, Fulton, B.R., additional, Garnsworthy, A.B., additional, Gomez-Camacho, J., additional, Hackman, G., additional, Kirsebom, O.S., additional, Kuhn, K., additional, Krüecken, R., additional, Lattuada, M., additional, Lay, J.A., additional, Marquínez-Durán, G., additional, Martel, I., additional, Miller, D., additional, Moukaddam, M., additional, O'Malley, P.D., additional, Perea, A., additional, Rajabali, M.M., additional, Sánchez-Benítez, A.M., additional, Sarazin, F., additional, Scuderi, V., additional, Svensson, C.E., additional, Tengblad, O., additional, Unsworth, C., additional, and Wang, Z.M., additional

Published
2014
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40. Magnetic moment measurement in72Zn using the Transient Field technique and Coulomb excitation in inverse kinematics

Author

Illana Sisón, A., primary, Jungclaus, A., additional, Orlandi, R., additional, Perea, A., additional, Briz, J.A., additional, Bauer, C., additional, Gernhäuser, R., additional, Leske, J., additional, Mücher, D., additional, Pakarinen, J., additional, Pietralla, N., additional, Rajabali, M.M., additional, Seiler, D., additional, and Stahl, C., additional

Published
2014
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41. A dedicated decay-spectroscopy station for the collinear resonance ionization experiment at ISOLDE

Author

Rajabali, M.M., primary, Lynch, K.M., additional, Cocolios, T.E., additional, Billowes, J., additional, Bissell, M.L., additional, De Schepper, S., additional, Dewolf, K., additional, Flanagan, K.T., additional, Le Blanc, F., additional, Marsh, B.A., additional, Mason, P.J.R., additional, Matea, I., additional, Neyens, G., additional, Papuga, J., additional, Procter, T.J., additional, Rothe, S., additional, Simpson, G.S., additional, Smith, A.J., additional, Stroke, H.H., additional, Verney, D., additional, Walker, P.M., additional, Wendt, K., additional, and Wood, R.T., additional

Published
2013
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42. Is the 7/2^<->_<1> isomer state of ^<43>S spherical?

Author

Chevrier, R., Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., and Yoshimi, A.

Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2^_ isomeric state in ^_S_ [E^∗ =320.5(5) keV , T_=415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, ∣Q_s∣=23(3) efm^2 , is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured ∣Q_s∣, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

Published
2012

43. Is the 7/2^<->_<1> isomer state of ^<43>S spherical?

Author

Chevrier, R., Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., Yoshimi, A., Chevrier, R., Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., and Yoshimi, A.

Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2^<−>_<1> isomeric state in ^<43>_<16>S_<27> [E^∗ =320.5(5) keV , T_<1/2>=415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, ∣Q_s∣=23(3) efm^2 , is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured ∣Q_s∣, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

44. Is the 7/2^<->_<1> isomer state of ^<43>S spherical?

Author

Chevrier, R., Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., Yoshimi, A., Chevrier, R., Daugas, J.M., Gaudefroy, L., Ichikawa, Y., Ueno, H., Hass, M., Haas, H., Cottenier, S., Aoi, N., Asahi, K., Balabanski, D.L., Fukuda, N., Furukawa, T., Georgiev, G., Hayashi, H., Iijima, H., Inabe, N., Inoue, T., Ishihara, M., Ishii, Y., Kameda, D., Kubo, T., Nanao, T., Neyens, G., Ohnishi, T., Rajabali, M.M., Suzuki, K., Takeda, H., Tsuchiya, M., Vermeulen, N., Watanabe, H., and Yoshimi, A.

Abstract

We report on the spectroscopic quadrupole moment measurement of the 7/2^<−>_<1> isomeric state in ^<43>_<16>S_<27> [E^∗ =320.5(5) keV , T_<1/2>=415(3) ns], using the time dependent perturbed angular distribution technique at the RIKEN RIBF facility. Our value, ∣Q_s∣=23(3) efm^2 , is larger than that expected for a single-particle state. Shell model calculations using the modern SDPF-U interaction for this mass region reproduce remarkably well the measured ∣Q_s∣, and show that non-negligible correlations drive the isomeric state away from a purely spherical shape.

45. Segmented YSO scintillation detectors as a new [formula omitted]-implant detection tool for decay spectroscopy in fragmentation facilities.

Author

Yokoyama, R., Singh, M., Grzywacz, R., Keeler, A., King, T.T., Agramunt, J., Brewer, N.T., Go, S., Heideman, J., Liu, J., Nishimura, S., Parkhurst, P., Phong, V.H., Rajabali, M.M., Rasco, B.C., Rykaczewski, K.P., Stracener, D.W., Tain, J.L., Tolosa-Delgado, A., and Vaigneur, K.

Subjects
*SCINTILLATION counters, *PHOTOMULTIPLIERS, *SPECTROMETRY, *DETECTORS, *RADIOISOTOPES, *SCINTILLATORS
Abstract

A newly developed segmented YSO scintillator detector was implemented for the first time at the RI-beam Factory at RIKEN Nishina Center as an implantation-decay counter. The results from the experiment demonstrate that the detector is a viable alternative to conventional silicon-strip detectors with its good timing resolution and high detection efficiency for β particles. A Position-Sensitive Photo-Multiplier Tube (PSPMT) is coupled with a 48 × 48 segmented YSO crystal. To demonstrate its capabilities, a known short-lived isomer in 76Ni and the β decay of 74Co were measured by implanting those ions into the YSO detector. The half-lives and γ -rays observed in this work are consistent with the known values. The β -ray detection efficiency is more than 80 % for the decay of 74Co. [ABSTRACT FROM AUTHOR]

Published
2019
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46. Magnetic and quadrupole moments of neutron deficient 58–62Cu isotopes

Author

Vingerhoets, P., Flanagan, K.T., Billowes, J., Bissell, M.L., Blaum, K., Cheal, B., De Rydt, M., Forest, D.H., Geppert, Ch., Honma, M., Kowalska, M., Krämer, J., Kreim, K., Krieger, A., Neugart, R., Neyens, G., Nörtershäuser, W., Papuga, J., Procter, T.J., and Rajabali, M.M.

Subjects
*QUADRUPOLE moments, *MAGNETIC dipoles, *NEUTRONS, *COPPER isotopes, *HYPERFINE structure, *NUCLEAR shell theory, *LASER spectroscopy
Abstract

Abstract: This paper reports on the ground state nuclear moments measured in 58–62Cu using collinear laser spectroscopy at the ISOLDE facility. The quadrupole moments for 58–60Cu have been measured for the first time as , , and with higher precision for 61,62Cu as , . The magnetic moments of 58,59Cu are measured with a higher precision as and . The experimental nuclear moments are compared to large-scale shell-model calculations with the GXPF1 and GXPF1A effective interactions, allowing the softness of the 56Ni core to be studied. [Copyright &y& Elsevier]

Published
2011
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