Direct evidence for octupole deformation in and the origin of large moment variations in reflection-asymmetric nuclei
Abstract
Despite the more than one order of magnitude difference between the measured dipole moments in 144Ba and 146Ba, the strength of the octupole correlations in 146Ba have been determined to be as strong as that in 144Ba with a similar value of B(E3; 3- → 0+) ( 48 W.u.). The new results not only establish unambiguously the presence of a region of octupole deformation centered on these neutron-rich Ba isotopes, but also manifest the dependence of the electric dipole moments on the occupancy of different neutron orbitals in nuclei with enhanced octupole strength, as revealed by fully microscopic calculations.
- Authors:
-
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- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. Autonoma de Madrid, Madrid (Spain)
- Univ. of Rochester, Rochester, NY (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1353152
- Alternate Identifier(s):
- OSTI ID: 1351698; OSTI ID: 1365825; OSTI ID: 1372268; OSTI ID: 1379808
- Report Number(s):
- LLNL-JRNL-716436; INL/JOU-17-40819
Journal ID: ISSN 0031-9007; PRLTAO
- Grant/Contract Number:
- AC52-07NA27344; AC02-06CH11357; AC07-05ID14517; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 118; Journal Issue: 15; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; barium; CARIBU; CHICO2; Coulomb excitation; dipole; E3 transitions; GRETINA; octupole
Citation Formats
Bucher, B., Zhu, S., Wu, C. Y., Janssens, R. V. F., Bernard, R. N., Robledo, L. M., Rodríguez, T. R., Cline, D., Hayes, A. B., Ayangeakaa, A. D., Buckner, M. Q., Campbell, C. M., Carpenter, M. P., Clark, J. A., Crawford, H. L., David, H. M., Dickerson, C., Harker, J., Hoffman, C. R., Kay, B. P., Kondev, F. G., Lauritsen, T., Macchiavelli, A. O., Pardo, R. C., Savard, G., Seweryniak, D., and Vondrasek, R. Direct evidence for octupole deformation in Ba146 and the origin of large E1 moment variations in reflection-asymmetric nuclei. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.118.152504.
Bucher, B., Zhu, S., Wu, C. Y., Janssens, R. V. F., Bernard, R. N., Robledo, L. M., Rodríguez, T. R., Cline, D., Hayes, A. B., Ayangeakaa, A. D., Buckner, M. Q., Campbell, C. M., Carpenter, M. P., Clark, J. A., Crawford, H. L., David, H. M., Dickerson, C., Harker, J., Hoffman, C. R., Kay, B. P., Kondev, F. G., Lauritsen, T., Macchiavelli, A. O., Pardo, R. C., Savard, G., Seweryniak, D., & Vondrasek, R. Direct evidence for octupole deformation in Ba146 and the origin of large E1 moment variations in reflection-asymmetric nuclei. United States. https://doi.org/10.1103/PhysRevLett.118.152504
Bucher, B., Zhu, S., Wu, C. Y., Janssens, R. V. F., Bernard, R. N., Robledo, L. M., Rodríguez, T. R., Cline, D., Hayes, A. B., Ayangeakaa, A. D., Buckner, M. Q., Campbell, C. M., Carpenter, M. P., Clark, J. A., Crawford, H. L., David, H. M., Dickerson, C., Harker, J., Hoffman, C. R., Kay, B. P., Kondev, F. G., Lauritsen, T., Macchiavelli, A. O., Pardo, R. C., Savard, G., Seweryniak, D., and Vondrasek, R. Wed .
"Direct evidence for octupole deformation in Ba146 and the origin of large E1 moment variations in reflection-asymmetric nuclei". United States. https://doi.org/10.1103/PhysRevLett.118.152504. https://www.osti.gov/servlets/purl/1353152.
@article{osti_1353152,
title = {Direct evidence for octupole deformation in Ba146 and the origin of large E1 moment variations in reflection-asymmetric nuclei},
author = {Bucher, B. and Zhu, S. and Wu, C. Y. and Janssens, R. V. F. and Bernard, R. N. and Robledo, L. M. and Rodríguez, T. R. and Cline, D. and Hayes, A. B. and Ayangeakaa, A. D. and Buckner, M. Q. and Campbell, C. M. and Carpenter, M. P. and Clark, J. A. and Crawford, H. L. and David, H. M. and Dickerson, C. and Harker, J. and Hoffman, C. R. and Kay, B. P. and Kondev, F. G. and Lauritsen, T. and Macchiavelli, A. O. and Pardo, R. C. and Savard, G. and Seweryniak, D. and Vondrasek, R.},
abstractNote = {Despite the more than one order of magnitude difference between the measured dipole moments in 144Ba and 146Ba, the strength of the octupole correlations in 146Ba have been determined to be as strong as that in 144Ba with a similar value of B(E3; 3- → 0+) ( 48 W.u.). The new results not only establish unambiguously the presence of a region of octupole deformation centered on these neutron-rich Ba isotopes, but also manifest the dependence of the electric dipole moments on the occupancy of different neutron orbitals in nuclei with enhanced octupole strength, as revealed by fully microscopic calculations.},
doi = {10.1103/PhysRevLett.118.152504},
journal = {Physical Review Letters},
number = 15,
volume = 118,
place = {United States},
year = {Wed Apr 12 00:00:00 EDT 2017},
month = {Wed Apr 12 00:00:00 EDT 2017}
}
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