Search

Your search keyword '"Moschner K"' showing total 11 results
Start Over Author "Moschner K" Publisher edp sciences
11 results on '"Moschner K"'

1. Simulations of the SIMBA array towards the determination of Qβ values

Author

Warr N., Blazhev A., and Moschner K.

Subjects
Physics, QC1-999
Abstract

In an experiment at RIKEN, radioactive ions were implanted in the SIMBA silicon detector array and the β particles from the subsequent decay detected. However, as SIMBA is not capable of complete calorimetry, it is not possible to extract Qβ values directly from the data. Geant4 simulations have been used to determine the response of SIMBA to a given β-emission spectrum. By simulating with different β spectra and calculating the detector response to each spectrum, it is possible to compare with experiment and deduce the Qβ values. The technique is validated using two nuclei, for which the expected β spectrum is known from the literature.

Published
2015
Full Text
View/download PDF

2. Do nuclei go pear-shaped? Coulomb excitation of 220Rn and 224Ra at REX-ISOLDE (CERN)

Author

Scheck M., Gaffney L. P., Butler P. A., Hayes A. B., Wenander F., Albers M., Bastin B., Bauer C., Blazhev A., Boenig S., Bree N., Cederkall J., Chupp T., Cline D., Cocolios T. E., Davinson T., De Witte H., Diriken J., Grahn T., Herzan A., Huyse M., Jenkins D. G., Joss D. T., Kesteloot N., Konki J., Kowalczyk M., Kroell Th., Kwan E., Lutter R., Moschner K., Napiorkowski P., Pakarinen J., Pfeiffer M., Radeck D., Reiter P., Reynders K., Rigby S. V., Robledo L. M., Rudigier M., Sambi S., Seidlitz M., Siebeck B., Stora T., Thoele P., Van Duppen P., Vermeulen M. J., von Schmid M., Voulot D., Warr N., Wimmer K., Wrzosek-Lipska K., Wu C. Y., and Zielinska M.

Subjects
Physics, QC1-999
Abstract

The IS475 collaboration conducted Coulomb-excitation experiments with post-accelerated radioactive 220Rn and 224Ra beams at the REX-ISOLDE facility. The beam particles (Ebeam: 2.83 MeV/u) were Coulomb excited using 60Ni, 114Cd, and 120Sn scattering targets. De-excitation γ-rays were detected employing the Miniball array and scattered particles were detected in a silicon detector. Exploiting the Coulomb-excitation code GOSIA for each nucleus several matrix elements could be obtained from the measured γ-ray yields. The extracted ‹3−||E3||0+› matrix element allows for the conclusion that, while 220Rn represents an octupole vibrational system, 224Ra has already substantial octupole correlations in its ground state. This finding has implications for the search of CP-violating Schiff moments in the atomic systems of the adjacent odd-mass nuclei.

Published
2015
Full Text
View/download PDF

3. Onset of collectivity in 96,98Sr studied via Coulomb excitation

Author

Clément E., Görgen A., Dijon A., France G. de, Bastin B., Blazhev A., Bree N., Butler P., Delahaye P., Ekstrom A., Georgiev G., Hasan N., Iwanicki J., Jenkins D., Korten W., Larsen A. C., Ljungvall J., Moschner K., Napiorkowski P., Pakarinen J., Petts A., Renstrom T., Seidlitz M., Siem S., Sotty C., Srebrny J., Stefanescu I., Tveten G. M., Walle J. Van de, Warr N., Wrzosek-Lipska K., Zielińska M., Bauer C., Bruyneel B., Butterworth J., Fitzpatrick C., Fransen C., Gernhäuser R., Hess H., Lutter R., Marley P., Reiter P., Siebeck B., Vermeulen M., Wiens A., and De Witte H.

Subjects
Physics, QC1-999
Abstract

A rapid onset of quadrupole deformation is known to occur around the neutron number 60 in the neutron-rich Zr and Sr isotopes. This shape change has made the neutron-rich A = 100 region an active area of experimental and theoretical studies for many decades now. We report in this contribution new experimental results in the neutron rich 96,98Sr investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility, CERN. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross section supporting the scenario of shape coexistence/change at N=60. Future perspectives are presented including the recent experimental campaign performed at ILL-Grenoble.

Published
2014
Full Text
View/download PDF

4. Isomer and beta decay spectroscopy in the 132Sn region with EURICA

Author

Jungclaus A., Simpson G.S., Gey G., Taprogge J., Nishimura S., Doornenbal P., Lorusso G., Söderström P.-A., Sumikama T., Xu Z., Baba H., Browne F., Fukuda N., Inabe N., Isobe T., Jung H.S., Kameda D., Kim G.D., Kim Y.-K., Kojouharov I., Kubo T., Kurz N., Kwon Y.K., Li Z., Sakurai H., Schaffner H., Suzuki H., Takeda H., Vajta Z., Watanabe H., Wu J., Yagi A., Yoshinaga K., Bönig S., Daugas J.-M., Drouet F., Gernhäuser R., Ilieva S., Kröll T., Montaner-Pizá A., Moschner K., Mücher D., Nishibata H., Orlandi R., Steiger K., and Wendt A.

Subjects
Physics, QC1-999
Abstract

The first EURICA campaign with high intensity Uranium beams took place at RIKEN in November/December 2012. Within this campaign experiment NP1112-RIBF85 was performed dedicated to the study of the isomeric and beta decays of neutronrich Cd, In, Sn and Sb isotopes towards and beyond the N=82 neutron shell closure. In this contribution we present a first status report of the analysis of the extensive data set obtained in this experiment.

Published
2014
Full Text
View/download PDF

5. Onset of collectivity in neutron-rich Sr and Kr isotopes: Prompt spectroscopy after Coulomb excitation at REX-ISOLDE, CERN

Author

Clément E., Görgen A., Dijon A., de France G., Bastin B., Blazhev A., Bree N., Butler P., Delahaye P., Ekstrom A., Georgiev G., Hasan N., Iwanicki J., Jenkins D., Korten W., Larsen A.C., Ljungvall J., Moschner K., Napiorkowski P., Pakarinen J., Petts A., Renstrom T., Seidlitz M., Siem S., Sotty C., Srebrny J., Stefanescu I., Tveten G.M., Van de Walle J., Warr N., Wrzosek-Lipska K., Zielińska M., Bauer C., Bruyneel B., Butterworth J., Fitzpatrick C., Fransen C., Gernhäuser R., Hess H., Lutter R., Marley P., Reiter P., Siebeck B., Vermeulen M., Wiens A., and De Witte H.

Subjects
Physics, QC1-999
Abstract

A rapid onset of quadrupole deformation is known to occur around the neutron number 60 in the neutron-rich Zr and Sr isotopes. This shape change has made the neutron-rich A = 100 region an active area of experimental and theoretical studies for many decades now. We report in this contribution new experimental results in the neutron rich 96,98Sr investigated by safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility, CERN. Reduced transition probabilities and spectroscopic quadrupole moments have been extracted from the differential Coulomb excitation cross section supporting the scenario of shape coexistence/change at N = 60. Future perspectives are presented including the recent experimental campaign performed at ILL-Grenoble.

Published
2013
Full Text
View/download PDF

6. Study of ground and excited state decays in N approximate to Z Ag nuclei

Author

Moschner, K., Blazhev, A., Warr, N., Boutachkov, P., Davies, P., Wadsworth, R., Ameil, F., Baba, H., Bäck, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Go, S., Górska, M., Grawe, H., Gregor, E., Hotaka, H., Isobe, T., Jenkins, G.D., Jolie, J., Jung, H.S., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Pietralla, N., Schaffner, H., Söderström, P.-A., Steiger, K., Sumikama, T., Taprogge, J., Thöle, P., Watanabe, H., Werner, V., Xu, Z.Y., Yagi, A., Yoshinaga, K., Zhu, Y., RIKEN Nishina Center for Accelerator-Based Science, University of Tokyo, Federal Ministry of Education and Research (Germany), and Department of Energy (US)

Abstract

4 pags., 4 figs. -- CGS15 – Capture Gamma-Ray Spectroscopy and Related Topics, A decay spectroscopy experiment was performed within the EURICA campaign at RIKEN in 2012. It aimed at the isomer and particle spectroscopy of excited states and ground states in the mass region below the doubly magic 100Sn. The N = Z nuclei 98In, 96Cd and 94Ag were of particular interest for the present study. Preliminary results on the neutron deficient nuclei 93Ag and 94Ag are presented. In 94Ag a more precise value for the half-life of the ground state’s superallowed Fermi transition was deduced. In addition the energy spectra of the mentioned decay could be reproduced through precise Geant4 simulations of the used active stopper SIMBA. This will enable us to extract Qβ values from the measured data. The decay of 93Ag is discussed based on the observed implantation-decay correlation events., This work was carried out at the RIBF operated by RIKEN Nishina Center, RIKEN and CNS, University of Tokyo. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. This work was supported by the German BMBF under Contract No. 05P12PKFNE and by the U.S. Department of Energy under grant No. DE-FG02-91ER-40609.

Published
2015

7. Study of ground and excited state decays inN≈ZAg nuclei

Author

Moschner, K., primary, Blazhev, A., additional, Warr, N., additional, Boutachkov, P., additional, Davies, P., additional, Wadsworth, R., additional, Ameil, F., additional, Baba, H., additional, Bäck, T., additional, Dewald, M., additional, Doornenbal, P., additional, Faestermann, T., additional, Gengelbach, A., additional, Gerl, J., additional, Gernhäuser, R., additional, Go, S., additional, Górska, M., additional, Grawe, H., additional, Gregor, E., additional, Hotaka, H., additional, Isobe, T., additional, Jenkins, D. G., additional, Jolie, J., additional, Jung, H. S., additional, Kojouharov, I., additional, Kurz, N., additional, Lewitowicz, M., additional, Lorusso, G., additional, Merchan, E., additional, Naqvi, F., additional, Nishibata, H., additional, Nishimura, D., additional, Nishimura, S., additional, Pietralla, N., additional, Schaffner, H., additional, Söderström, P.-A., additional, Steiger, K., additional, Sumikama, T., additional, Taprogge, J., additional, Thöle, P., additional, Watanabe, H., additional, Werner, V., additional, Xu, Z. Y., additional, Yagi, A., additional, Yoshinaga, K., additional, and Zhu, Y., additional

Published
2015
Full Text
View/download PDF

8. Do nuclei go pear-shaped? Coulomb excitation of220Rn and224Ra at REX-ISOLDE (CERN)

Author

Scheck, M., primary, Gaffney, L. P., additional, Butler, P. A., additional, Hayes, A. B., additional, Wenander, F., additional, Albers, M., additional, Bastin, B., additional, Bauer, C., additional, Blazhev, A., additional, Boenig, S., additional, Bree, N., additional, Cederkall, J., additional, Chupp, T., additional, Cline, D., additional, Cocolios, T. E., additional, Davinson, T., additional, De Witte, H., additional, Diriken, J., additional, Grahn, T., additional, Herzan, A., additional, Huyse, M., additional, Jenkins, D. G., additional, Joss, D. T., additional, Kesteloot, N., additional, Konki, J., additional, Kowalczyk, M., additional, Kroell, Th., additional, Kwan, E., additional, Lutter, R., additional, Moschner, K., additional, Napiorkowski, P., additional, Pakarinen, J., additional, Pfeiffer, M., additional, Radeck, D., additional, Reiter, P., additional, Reynders, K., additional, Rigby, S. V., additional, Robledo, L. M., additional, Rudigier, M., additional, Sambi, S., additional, Seidlitz, M., additional, Siebeck, B., additional, Stora, T., additional, Thoele, P., additional, Van Duppen, P., additional, Vermeulen, M. J., additional, von Schmid, M., additional, Voulot, D., additional, Warr, N., additional, Wimmer, K., additional, Wrzosek-Lipska, K., additional, Wu, C. Y., additional, and Zielinska, M., additional

Published
2015
Full Text
View/download PDF

9. Isomer and beta decay spectroscopy in the132Sn region with EURICA

Author

Jungclaus, A., primary, Simpson, G.S., additional, Gey, G., additional, Taprogge, J., additional, Nishimura, S., additional, Doornenbal, P., additional, Lorusso, G., additional, Söderström, P.-A., additional, Sumikama, T., additional, Xu, Z., additional, Baba, H., additional, Browne, F., additional, Fukuda, N., additional, Inabe, N., additional, Isobe, T., additional, Jung, H.S., additional, Kameda, D., additional, Kim, G.D., additional, Kim, Y.-K., additional, Kojouharov, I., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y.K., additional, Li, Z., additional, Sakurai, H., additional, Schaffner, H., additional, Suzuki, H., additional, Takeda, H., additional, Vajta, Z., additional, Watanabe, H., additional, Wu, J., additional, Yagi, A., additional, Yoshinaga, K., additional, Bönig, S., additional, Daugas, J.-M., additional, Drouet, F., additional, Gernhäuser, R., additional, Ilieva, S., additional, Kröll, T., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Mücher, D., additional, Nishibata, H., additional, Orlandi, R., additional, Steiger, K., additional, and Wendt, A., additional

Published
2014
Full Text
View/download PDF

10. Onset of collectivity in96,98Sr studied via Coulomb excitation

Author

Clément, E., primary, Görgen, A., additional, Dijon, A., additional, France, G. de, additional, Bastin, B., additional, Blazhev, A., additional, Bree, N., additional, Butler, P., additional, Delahaye, P., additional, Ekstrom, A., additional, Georgiev, G., additional, Hasan, N., additional, Iwanicki, J., additional, Jenkins, D., additional, Korten, W., additional, Larsen, A. C., additional, Ljungvall, J., additional, Moschner, K., additional, Napiorkowski, P., additional, Pakarinen, J., additional, Petts, A., additional, Renstrom, T., additional, Seidlitz, M., additional, Siem, S., additional, Sotty, C., additional, Srebrny, J., additional, Stefanescu, I., additional, Tveten, G. M., additional, Walle, J. Van de, additional, Warr, N., additional, Wrzosek-Lipska, K., additional, Zielińska, M., additional, Bauer, C., additional, Bruyneel, B., additional, Butterworth, J., additional, Fitzpatrick, C., additional, Fransen, C., additional, Gernhäuser, R., additional, Hess, H., additional, Lutter, R., additional, Marley, P., additional, Reiter, P., additional, Siebeck, B., additional, Vermeulen, M., additional, Wiens, A., additional, and De Witte, H., additional

Published
2014
Full Text
View/download PDF

11. Simulations of the SIMBA array towards the determination of Qβ values.

Author

Warr, N., Blazhev, A., and Moschner, K.

Subjects
SILICON detectors, RADIOACTIVE substances, DETECTORS, CALORIMETRY, IONS
Abstract

In an experiment at RIKEN, radioactive ions were implanted in the SIMBA silicon detector array and the β particles from the subsequent decay detected. However, as SIMBA is not capable of complete calorimetry, it is not possible to extract Qβ values directly from the data. Geant4 simulations have been used to determine the response of SIMBA to a given β-emission spectrum. By simulating with different β spectra and calculating the detector response to each spectrum, it is possible to compare with experiment and deduce the Qβ values. The technique is validated using two nuclei, for which the expected β spectrum is known from the literature. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results