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Nuclear structure of dripline nuclei elucidated through precision mass measurements of $^{23}$Si, $^{26}$P, $^{27,28}$S, and $^{31}$Ar

Fuente: arXiv

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Bibliographic Details
Main Authors:	Yu, Y., Xing, Y. M., Zhang, Y. H., Wang, M., Zhou, X. H., Li, J. G., Li, H. H., Yuan, Q., Niu, Y. F., Huang, Y. N., Geng, J., Guo, J. Y., Chen, J. W., Pei, J. C., Xu, F. R., Litvinov, Yu. A., Blaum, K., de Angelis, G., Tanihata, I., Yamaguchi, T., Zhou, X., Xu, H. S., Chen, Z. Y., Chen, R. J., Deng, H. Y., Fu, C. Y., Ge, W. W., Huang, W. J., Jiao, H. Y., Luo, Y. F., Li, H. F., Liao, T., Shi, J. Y., Si, M., Sun, M. Z., Shuai, P., Tu, X. L., Wang, Q., Xu, X., Yan, X. L., Yuan, Y. J., Zhang, M.
Format:	Preprint
Published:	2024
Subjects:	Nuclear Experiment
Online Access:	Acceder al recurso
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_version_	1866912083335970816
author	Yu, Y. Xing, Y. M. Zhang, Y. H. Wang, M. Zhou, X. H. Li, J. G. Li, H. H. Yuan, Q. Niu, Y. F. Huang, Y. N. Geng, J. Guo, J. Y. Chen, J. W. Pei, J. C. Xu, F. R. Litvinov, Yu. A. Blaum, K. de Angelis, G. Tanihata, I. Yamaguchi, T. Zhou, X. Xu, H. S. Chen, Z. Y. Chen, R. J. Deng, H. Y. Fu, C. Y. Ge, W. W. Huang, W. J. Jiao, H. Y. Luo, Y. F. Li, H. F. Liao, T. Shi, J. Y. Si, M. Sun, M. Z. Shuai, P. Tu, X. L. Wang, Q. Xu, X. Yan, X. L. Yuan, Y. J. Zhang, M.
author_facet	Yu, Y. Xing, Y. M. Zhang, Y. H. Wang, M. Zhou, X. H. Li, J. G. Li, H. H. Yuan, Q. Niu, Y. F. Huang, Y. N. Geng, J. Guo, J. Y. Chen, J. W. Pei, J. C. Xu, F. R. Litvinov, Yu. A. Blaum, K. de Angelis, G. Tanihata, I. Yamaguchi, T. Zhou, X. Xu, H. S. Chen, Z. Y. Chen, R. J. Deng, H. Y. Fu, C. Y. Ge, W. W. Huang, W. J. Jiao, H. Y. Luo, Y. F. Li, H. F. Liao, T. Shi, J. Y. Si, M. Sun, M. Z. Shuai, P. Tu, X. L. Wang, Q. Xu, X. Yan, X. L. Yuan, Y. J. Zhang, M.
contents	Using the B$ρ$-defined isochronous mass spectrometry technique, we report the first determination of the $^{23}$Si, $^{26}$P, $^{27}$S, and $^{31}$Ar masses and improve the precision of the $^{28}$S mass by a factor of 11. Our measurements confirm that these isotopes are bound and fix the location of the proton dripline in P, S, and Ar. We find that the mirror energy differences of the mirror-nuclei pairs $^{26}$P-$^{26}$Na, $^{27}$P-$^{27}$Mg, $^{27}$S-$^{27}$Na, $^{28}$S-$^{28}$Mg, and $^{31}$Ar-$^{31}$Al deviate significantly from the values predicted assuming mirror symmetry. In addition, we observe similar anomalies in the excited states, but not in the ground states, of the mirror-nuclei pairs $^{22}$Al-$^{22}$F and $^{23}$Al-$^{23}$Ne. Using $ab~ initio$ VS-IMSRG and mean field calculations, we show that such a mirror-symmetry breaking phenomeon can be explained by the extended charge distributions of weakly-bound, proton-rich nuclei. When observed, this phenomenon serves as a unique signature that can be valuable for identifying proton-halo candidates.
format	Preprint
id	arxiv_https___arxiv_org_abs_2410_17701
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Nuclear structure of dripline nuclei elucidated through precision mass measurements of $^{23}$Si, $^{26}$P, $^{27,28}$S, and $^{31}$Ar Yu, Y. Xing, Y. M. Zhang, Y. H. Wang, M. Zhou, X. H. Li, J. G. Li, H. H. Yuan, Q. Niu, Y. F. Huang, Y. N. Geng, J. Guo, J. Y. Chen, J. W. Pei, J. C. Xu, F. R. Litvinov, Yu. A. Blaum, K. de Angelis, G. Tanihata, I. Yamaguchi, T. Zhou, X. Xu, H. S. Chen, Z. Y. Chen, R. J. Deng, H. Y. Fu, C. Y. Ge, W. W. Huang, W. J. Jiao, H. Y. Luo, Y. F. Li, H. F. Liao, T. Shi, J. Y. Si, M. Sun, M. Z. Shuai, P. Tu, X. L. Wang, Q. Xu, X. Yan, X. L. Yuan, Y. J. Zhang, M. Nuclear Experiment Using the B$ρ$-defined isochronous mass spectrometry technique, we report the first determination of the $^{23}$Si, $^{26}$P, $^{27}$S, and $^{31}$Ar masses and improve the precision of the $^{28}$S mass by a factor of 11. Our measurements confirm that these isotopes are bound and fix the location of the proton dripline in P, S, and Ar. We find that the mirror energy differences of the mirror-nuclei pairs $^{26}$P-$^{26}$Na, $^{27}$P-$^{27}$Mg, $^{27}$S-$^{27}$Na, $^{28}$S-$^{28}$Mg, and $^{31}$Ar-$^{31}$Al deviate significantly from the values predicted assuming mirror symmetry. In addition, we observe similar anomalies in the excited states, but not in the ground states, of the mirror-nuclei pairs $^{22}$Al-$^{22}$F and $^{23}$Al-$^{23}$Ne. Using $ab~ initio$ VS-IMSRG and mean field calculations, we show that such a mirror-symmetry breaking phenomeon can be explained by the extended charge distributions of weakly-bound, proton-rich nuclei. When observed, this phenomenon serves as a unique signature that can be valuable for identifying proton-halo candidates.
title	Nuclear structure of dripline nuclei elucidated through precision mass measurements of $^{23}$Si, $^{26}$P, $^{27,28}$S, and $^{31}$Ar
topic	Nuclear Experiment
url	https://arxiv.org/abs/2410.17701