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High-Precision Mass Measurements of Proton-Rich Rh, Pd, Cd isotopes in the vicinity of 100Sn and Impact on X-Ray Burst and Supernova Nucleosynthesis

Fuente: arXiv

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Autori principali:	Hou, D. S., Xian, W. D., Rosenbusch, M., Wada, M., Schury, P., Takamine, A., Luo, Y., Lee, J., Ishiyama, H., Nishimura, S., Fu, C. Y., Dohi, A., Feng, H., He, Z., Kimura, S., Niwase, T., Phong, V. H., Yeung, T. T., Zeng, Q. B., Zha, S. X., Hirayama, Y., Ito, Y., Iimura, S., Gao, T., Yap, J. M., Zhang, M., Kajino, T., Watanabe, Y. X., Browne, F., Chen, S. D., Cortes, M. L., Doornenbal, P., Fukuda, N., Haba, H., Kusaka, K., Kojima, T. M., Kubono, S., Liu, X. Y., Liu, Z., Marshall, W., Michimasa, S., Moon, J. Y., Miyatake, H., Mukai, M., Ohtake, M., Paschalis, S., Petri, M., Shimizu, Y., Sonoda, T., Suzuki, H., Takeda, H., Taniuchi, R., Togano, Y., Tetly, L., Ueno, H., Wollnik, H., Yanagisawa, Y., Yoshimoto, M.
Natura:	Preprint
Pubblicazione:	2026
Soggetti:	Nuclear Experiment Astrophysics of Galaxies Nuclear Theory
Accesso online:	Acceder al recurso
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_version_	1866914356397080576
author	Hou, D. S. Xian, W. D. Rosenbusch, M. Wada, M. Schury, P. Takamine, A. Luo, Y. Lee, J. Ishiyama, H. Nishimura, S. Fu, C. Y. Dohi, A. Feng, H. He, Z. Kimura, S. Niwase, T. Phong, V. H. Yeung, T. T. Zeng, Q. B. Zha, S. X. Hirayama, Y. Ito, Y. Iimura, S. Gao, T. Yap, J. M. Zhang, M. Kajino, T. Watanabe, Y. X. Browne, F. Chen, S. D. Cortes, M. L. Doornenbal, P. Fukuda, N. Haba, H. Kusaka, K. Kojima, T. M. Kubono, S. Liu, X. Y. Liu, Z. Marshall, W. Michimasa, S. Moon, J. Y. Miyatake, H. Mukai, M. Ohtake, M. Paschalis, S. Petri, M. Shimizu, Y. Sonoda, T. Suzuki, H. Takeda, H. Taniuchi, R. Togano, Y. Tetly, L. Ueno, H. Wollnik, H. Yanagisawa, Y. Yoshimoto, M.
author_facet	Hou, D. S. Xian, W. D. Rosenbusch, M. Wada, M. Schury, P. Takamine, A. Luo, Y. Lee, J. Ishiyama, H. Nishimura, S. Fu, C. Y. Dohi, A. Feng, H. He, Z. Kimura, S. Niwase, T. Phong, V. H. Yeung, T. T. Zeng, Q. B. Zha, S. X. Hirayama, Y. Ito, Y. Iimura, S. Gao, T. Yap, J. M. Zhang, M. Kajino, T. Watanabe, Y. X. Browne, F. Chen, S. D. Cortes, M. L. Doornenbal, P. Fukuda, N. Haba, H. Kusaka, K. Kojima, T. M. Kubono, S. Liu, X. Y. Liu, Z. Marshall, W. Michimasa, S. Moon, J. Y. Miyatake, H. Mukai, M. Ohtake, M. Paschalis, S. Petri, M. Shimizu, Y. Sonoda, T. Suzuki, H. Takeda, H. Taniuchi, R. Togano, Y. Tetly, L. Ueno, H. Wollnik, H. Yanagisawa, Y. Yoshimoto, M.
contents	Using the ZeroDegree multi-reflection time-of-flight mass spectrograph of the CRISMASS project at RIKEN Radioactive Isotope Beam Factory, we performed high-precision mass measurements of proton-rich nuclei near the doubly magic nucleus 100Sn, achieving uncertainties on the order of 10 keV. The masses of 91Rh, 92Pd, and 96Cd were determined for the first time with high precision, and the accuracy of several additional masses was substantially improved. Incorporating the new data into X-ray burst simulations significantly reduces the abundance uncertainties in the $A$ = 90-100 region, shifting the reaction flow toward $A$ = 90 production and suppressing the synthesis of heavier nuclei. Further investigation of the $νp$-process indicates that 99Rh plays a significant role in the reaction flow within the mass region studied. These high-precision mass measurements refine the mass surface near 100Sn and provide critical constraints on models of proton-rich nucleosynthesis.
format	Preprint
id	arxiv_https___arxiv_org_abs_2602_23776
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	High-Precision Mass Measurements of Proton-Rich Rh, Pd, Cd isotopes in the vicinity of 100Sn and Impact on X-Ray Burst and Supernova Nucleosynthesis Hou, D. S. Xian, W. D. Rosenbusch, M. Wada, M. Schury, P. Takamine, A. Luo, Y. Lee, J. Ishiyama, H. Nishimura, S. Fu, C. Y. Dohi, A. Feng, H. He, Z. Kimura, S. Niwase, T. Phong, V. H. Yeung, T. T. Zeng, Q. B. Zha, S. X. Hirayama, Y. Ito, Y. Iimura, S. Gao, T. Yap, J. M. Zhang, M. Kajino, T. Watanabe, Y. X. Browne, F. Chen, S. D. Cortes, M. L. Doornenbal, P. Fukuda, N. Haba, H. Kusaka, K. Kojima, T. M. Kubono, S. Liu, X. Y. Liu, Z. Marshall, W. Michimasa, S. Moon, J. Y. Miyatake, H. Mukai, M. Ohtake, M. Paschalis, S. Petri, M. Shimizu, Y. Sonoda, T. Suzuki, H. Takeda, H. Taniuchi, R. Togano, Y. Tetly, L. Ueno, H. Wollnik, H. Yanagisawa, Y. Yoshimoto, M. Nuclear Experiment Astrophysics of Galaxies Nuclear Theory Using the ZeroDegree multi-reflection time-of-flight mass spectrograph of the CRISMASS project at RIKEN Radioactive Isotope Beam Factory, we performed high-precision mass measurements of proton-rich nuclei near the doubly magic nucleus 100Sn, achieving uncertainties on the order of 10 keV. The masses of 91Rh, 92Pd, and 96Cd were determined for the first time with high precision, and the accuracy of several additional masses was substantially improved. Incorporating the new data into X-ray burst simulations significantly reduces the abundance uncertainties in the $A$ = 90-100 region, shifting the reaction flow toward $A$ = 90 production and suppressing the synthesis of heavier nuclei. Further investigation of the $νp$-process indicates that 99Rh plays a significant role in the reaction flow within the mass region studied. These high-precision mass measurements refine the mass surface near 100Sn and provide critical constraints on models of proton-rich nucleosynthesis.
title	High-Precision Mass Measurements of Proton-Rich Rh, Pd, Cd isotopes in the vicinity of 100Sn and Impact on X-Ray Burst and Supernova Nucleosynthesis
topic	Nuclear Experiment Astrophysics of Galaxies Nuclear Theory
url	https://arxiv.org/abs/2602.23776