Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes
Abstract
Using isochronous mass spectrometry at the experimental storage ring CSRe in Lanzhou, the masses of 82Zr and 84Nb were measured for the first time with an uncertainty of ~10 keV, and the masses of 79Y, 81Zr, and 83Nb were re-determined with a higher precision. The latter are significantly less bound than their literature values. Our new and accurate masses remove the irregularities of the mass surface in this region of the nuclear chart. Our results do not support the predicted island of pronounced low α separation energies for neutron-deficient Mo and Tc isotopes, making the formation of Zr–Nb cycle in the rp-process unlikely. The new proton separation energy of 83Nb was determined to be 490(400) keV smaller than that in the Atomic Mass Evaluation 2012. This partly removes the overproduction of the p-nucleus 84Sr relative to the neutron-deficient molybdenum isotopes in the previous $νp$-process simulations.
- Authors:
- more »
- Publication Date:
- Research Org.:
- North Carolina State University, Raleigh, NC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1437859
- Alternate Identifier(s):
- OSTI ID: 1499316
- Grant/Contract Number:
- SC0010263
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 781 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 07 ISOTOPE AND RADIATION SOURCES
Citation Formats
Xing, Y. M., Li, K. A., Zhang, Y. H., Zhou, X. H., Wang, M., Litvinov, Yu. A., Blaum, K., Wanajo, S., Kubono, S., Martínez-Pinedo, G., Sieverding, A., Chen, R. J., Shuai, P., Fu, C. Y., Yan, X. L., Huang, W. J., Xu, X., Tang, X. D., Xu, H. S., Bao, T., Chen, X. C., Gao, B. S., He, J. J., Lam, Y. H., Li, H. F., Liu, J. H., Ma, X. W., Mao, R. S., Si, M., Sun, M. Z., Tu, X. L., Wang, Q., Yang, J. C., Yuan, Y. J., Zeng, Q., Zhang, P., Zhou, X., Zhan, W. L., Litvinov, S., Audi, G., Uesaka, T., Yamaguchi, Y., Yamaguchi, T., Ozawa, A., Fröhlich, C., Rauscher, T., Thielemann, F. -K., Sun, B. H., Sun, Y., Dai, A. C., and Xu, F. R. Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes. Netherlands: N. p., 2018.
Web. doi:10.1016/j.physletb.2018.04.009.
Xing, Y. M., Li, K. A., Zhang, Y. H., Zhou, X. H., Wang, M., Litvinov, Yu. A., Blaum, K., Wanajo, S., Kubono, S., Martínez-Pinedo, G., Sieverding, A., Chen, R. J., Shuai, P., Fu, C. Y., Yan, X. L., Huang, W. J., Xu, X., Tang, X. D., Xu, H. S., Bao, T., Chen, X. C., Gao, B. S., He, J. J., Lam, Y. H., Li, H. F., Liu, J. H., Ma, X. W., Mao, R. S., Si, M., Sun, M. Z., Tu, X. L., Wang, Q., Yang, J. C., Yuan, Y. J., Zeng, Q., Zhang, P., Zhou, X., Zhan, W. L., Litvinov, S., Audi, G., Uesaka, T., Yamaguchi, Y., Yamaguchi, T., Ozawa, A., Fröhlich, C., Rauscher, T., Thielemann, F. -K., Sun, B. H., Sun, Y., Dai, A. C., & Xu, F. R. Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes. Netherlands. https://doi.org/10.1016/j.physletb.2018.04.009
Xing, Y. M., Li, K. A., Zhang, Y. H., Zhou, X. H., Wang, M., Litvinov, Yu. A., Blaum, K., Wanajo, S., Kubono, S., Martínez-Pinedo, G., Sieverding, A., Chen, R. J., Shuai, P., Fu, C. Y., Yan, X. L., Huang, W. J., Xu, X., Tang, X. D., Xu, H. S., Bao, T., Chen, X. C., Gao, B. S., He, J. J., Lam, Y. H., Li, H. F., Liu, J. H., Ma, X. W., Mao, R. S., Si, M., Sun, M. Z., Tu, X. L., Wang, Q., Yang, J. C., Yuan, Y. J., Zeng, Q., Zhang, P., Zhou, X., Zhan, W. L., Litvinov, S., Audi, G., Uesaka, T., Yamaguchi, Y., Yamaguchi, T., Ozawa, A., Fröhlich, C., Rauscher, T., Thielemann, F. -K., Sun, B. H., Sun, Y., Dai, A. C., and Xu, F. R. Fri .
"Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes". Netherlands. https://doi.org/10.1016/j.physletb.2018.04.009.
@article{osti_1437859,
title = {Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes},
author = {Xing, Y. M. and Li, K. A. and Zhang, Y. H. and Zhou, X. H. and Wang, M. and Litvinov, Yu. A. and Blaum, K. and Wanajo, S. and Kubono, S. and Martínez-Pinedo, G. and Sieverding, A. and Chen, R. J. and Shuai, P. and Fu, C. Y. and Yan, X. L. and Huang, W. J. and Xu, X. and Tang, X. D. and Xu, H. S. and Bao, T. and Chen, X. C. and Gao, B. S. and He, J. J. and Lam, Y. H. and Li, H. F. and Liu, J. H. and Ma, X. W. and Mao, R. S. and Si, M. and Sun, M. Z. and Tu, X. L. and Wang, Q. and Yang, J. C. and Yuan, Y. J. and Zeng, Q. and Zhang, P. and Zhou, X. and Zhan, W. L. and Litvinov, S. and Audi, G. and Uesaka, T. and Yamaguchi, Y. and Yamaguchi, T. and Ozawa, A. and Fröhlich, C. and Rauscher, T. and Thielemann, F. -K. and Sun, B. H. and Sun, Y. and Dai, A. C. and Xu, F. R.},
abstractNote = {Using isochronous mass spectrometry at the experimental storage ring CSRe in Lanzhou, the masses of 82Zr and 84Nb were measured for the first time with an uncertainty of ~10 keV, and the masses of 79Y, 81Zr, and 83Nb were re-determined with a higher precision. The latter are significantly less bound than their literature values. Our new and accurate masses remove the irregularities of the mass surface in this region of the nuclear chart. Our results do not support the predicted island of pronounced low α separation energies for neutron-deficient Mo and Tc isotopes, making the formation of Zr–Nb cycle in the rp-process unlikely. The new proton separation energy of 83Nb was determined to be 490(400) keV smaller than that in the Atomic Mass Evaluation 2012. This partly removes the overproduction of the p-nucleus 84Sr relative to the neutron-deficient molybdenum isotopes in the previous $νp$-process simulations.},
doi = {10.1016/j.physletb.2018.04.009},
journal = {Physics Letters B},
number = C,
volume = 781,
place = {Netherlands},
year = {Fri Jun 01 00:00:00 EDT 2018},
month = {Fri Jun 01 00:00:00 EDT 2018}
}
https://doi.org/10.1016/j.physletb.2018.04.009
Web of Science
Figures / Tables:
Works referencing / citing this record:
Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes
text, January 2018
- Xing, Y. M.; Li, K. A.; Zhang, Y. H.
- GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt
Nuclear mass measurements with radioactive ion beams
journal, April 2019
- Famiano, Michael A.
- International Journal of Modern Physics E, Vol. 28, Issue 04
Nuclear physics research at heavy ion accelerators: Precision studies with stored and cooled exotic nuclei
journal, January 2020
- Litvinov, Yuri A.; Stöhlker, Thomas; Ma, Xin Wen
- Journal of Physics: Conference Series, Vol. 1401
Nuclear mass measurements with radioactive ion beams
journal, April 2019
- Famiano, Michael A.
- International Journal of Modern Physics E, Vol. 28, Issue 04
New mass measurements with trapped (radioactive) ions and related fundamental physics
journal, May 2019
- Lunney, D.
- Hyperfine Interactions, Vol. 240, Issue 1
Uncertainties in νp-process nucleosynthesis from Monte Carlo variation of reaction rates
journal, August 2019
- Nishimura (西村信哉), N.; Rauscher, T.; Hirschi, R.
- Monthly Notices of the Royal Astronomical Society, Vol. 489, Issue 1
Masses of ground and isomeric states of and configuration-dependent shell evolution in odd- indium isotopes
journal, November 2019
- Xu, X.; Liu, J. H.; Yuan, C. X.
- Physical Review C, Vol. 100, Issue 5
Figures / Tables found in this record: