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Title: Recoil- α -fission and recoil- α – α -fission events observed in the reaction 48 Ca + 243 Am

Abstract

A recent high-resolution α, X-ray, and γ-ray coincidence-spectroscopy experiment at GSI offered the first glimpse of excitation schemes of isotopes along α-decay chains of Z=115. To understand these observations and to make predictions about shell structure of superheavy nuclei below 288115, we employed nuclear DFT. We find that the presence and nature of low-energy E1 transitions in well-deformed nuclei around Z=110, N=168 strongly depends on the strength of the spin-orbit coupling; hence, it provides an excellent constraint on theoretical models of superheavy nuclei.

Authors:
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Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); European Commision (EC); Royal Physiographic Society in Lund (Sweden); Swedish Research Council (SRC); German Federal Ministry of Education and Research (BMBF); Science and Technology Facilities Council (STFC) (United Kingdom)
OSTI Identifier:
1358655
Alternate Identifier(s):
OSTI ID: 1347248; OSTI ID: 1454485
Grant/Contract Number:
NA0002847; NA0002574; SC0008511; 262010; AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
Journal Volume: 953; Journal Issue: C; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

Citation Formats

Forsberg, U., Rudolph, D., Andersson, L. -L., Di Nitto, A., Düllmann, Ch. E., Fahlander, C., Gates, J. M., Golubev, P., Gregorich, K. E., Gross, C. J., Herzberg, R. -D., Heßberger, F. P., Khuyagbaatar, J., Kratz, J. V., Rykaczewski, K., Sarmiento, L. G., Schädel, M., Yakushev, A., Åberg, S., Ackermann, D., Block, M., Brand, H., Carlsson, B. G., Cox, D., Derkx, X., Dobaczewski, J., Eberhardt, K., Even, J., Gerl, J., Jäger, E., Kindler, B., Krier, J., Kojouharov, I., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Nazarewicz, W., Nitsche, H., Omtvedt, J. P., Papadakis, P., Ragnarsson, I., Runke, J., Schaffner, H., Schausten, B., Shi, Yue, Thörle-Pospiech, P., Torres, T., Traut, T., Trautmann, N., Türler, A., Ward, A., Ward, D. E., and Wiehl, N. Recoil- α -fission and recoil- α – α -fission events observed in the reaction 48 Ca + 243 Am. United States: N. p., 2016. Web. doi:10.1016/j.nuclphysa.2016.04.025.
Forsberg, U., Rudolph, D., Andersson, L. -L., Di Nitto, A., Düllmann, Ch. E., Fahlander, C., Gates, J. M., Golubev, P., Gregorich, K. E., Gross, C. J., Herzberg, R. -D., Heßberger, F. P., Khuyagbaatar, J., Kratz, J. V., Rykaczewski, K., Sarmiento, L. G., Schädel, M., Yakushev, A., Åberg, S., Ackermann, D., Block, M., Brand, H., Carlsson, B. G., Cox, D., Derkx, X., Dobaczewski, J., Eberhardt, K., Even, J., Gerl, J., Jäger, E., Kindler, B., Krier, J., Kojouharov, I., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Nazarewicz, W., Nitsche, H., Omtvedt, J. P., Papadakis, P., Ragnarsson, I., Runke, J., Schaffner, H., Schausten, B., Shi, Yue, Thörle-Pospiech, P., Torres, T., Traut, T., Trautmann, N., Türler, A., Ward, A., Ward, D. E., & Wiehl, N. Recoil- α -fission and recoil- α – α -fission events observed in the reaction 48 Ca + 243 Am. United States. doi:10.1016/j.nuclphysa.2016.04.025.
Forsberg, U., Rudolph, D., Andersson, L. -L., Di Nitto, A., Düllmann, Ch. E., Fahlander, C., Gates, J. M., Golubev, P., Gregorich, K. E., Gross, C. J., Herzberg, R. -D., Heßberger, F. P., Khuyagbaatar, J., Kratz, J. V., Rykaczewski, K., Sarmiento, L. G., Schädel, M., Yakushev, A., Åberg, S., Ackermann, D., Block, M., Brand, H., Carlsson, B. G., Cox, D., Derkx, X., Dobaczewski, J., Eberhardt, K., Even, J., Gerl, J., Jäger, E., Kindler, B., Krier, J., Kojouharov, I., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Nazarewicz, W., Nitsche, H., Omtvedt, J. P., Papadakis, P., Ragnarsson, I., Runke, J., Schaffner, H., Schausten, B., Shi, Yue, Thörle-Pospiech, P., Torres, T., Traut, T., Trautmann, N., Türler, A., Ward, A., Ward, D. E., and Wiehl, N. Tue . "Recoil- α -fission and recoil- α – α -fission events observed in the reaction 48 Ca + 243 Am". United States. doi:10.1016/j.nuclphysa.2016.04.025. https://www.osti.gov/servlets/purl/1358655.
@article{osti_1358655,
title = {Recoil- α -fission and recoil- α – α -fission events observed in the reaction 48 Ca + 243 Am},
author = {Forsberg, U. and Rudolph, D. and Andersson, L. -L. and Di Nitto, A. and Düllmann, Ch. E. and Fahlander, C. and Gates, J. M. and Golubev, P. and Gregorich, K. E. and Gross, C. J. and Herzberg, R. -D. and Heßberger, F. P. and Khuyagbaatar, J. and Kratz, J. V. and Rykaczewski, K. and Sarmiento, L. G. and Schädel, M. and Yakushev, A. and Åberg, S. and Ackermann, D. and Block, M. and Brand, H. and Carlsson, B. G. and Cox, D. and Derkx, X. and Dobaczewski, J. and Eberhardt, K. and Even, J. and Gerl, J. and Jäger, E. and Kindler, B. and Krier, J. and Kojouharov, I. and Kurz, N. and Lommel, B. and Mistry, A. and Mokry, C. and Nazarewicz, W. and Nitsche, H. and Omtvedt, J. P. and Papadakis, P. and Ragnarsson, I. and Runke, J. and Schaffner, H. and Schausten, B. and Shi, Yue and Thörle-Pospiech, P. and Torres, T. and Traut, T. and Trautmann, N. and Türler, A. and Ward, A. and Ward, D. E. and Wiehl, N.},
abstractNote = {A recent high-resolution α, X-ray, and γ-ray coincidence-spectroscopy experiment at GSI offered the first glimpse of excitation schemes of isotopes along α-decay chains of Z=115. To understand these observations and to make predictions about shell structure of superheavy nuclei below 288115, we employed nuclear DFT. We find that the presence and nature of low-energy E1 transitions in well-deformed nuclei around Z=110, N=168 strongly depends on the strength of the spin-orbit coupling; hence, it provides an excellent constraint on theoretical models of superheavy nuclei.},
doi = {10.1016/j.nuclphysa.2016.04.025},
journal = {Nuclear Physics. A},
number = C,
volume = 953,
place = {United States},
year = {Tue Apr 26 00:00:00 EDT 2016},
month = {Tue Apr 26 00:00:00 EDT 2016}
}

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