{"title":"首次完整描述 $^{254}$No:超重核结构研究的新范例","authors":"D. D. Dao, F. Nowacki","doi":"arxiv-2409.08210","DOIUrl":null,"url":null,"abstract":"In this letter, we report the latest developments in the beyond mean-field\nmethods applied to the shell-model framework for the the description of heavy\ndeformed nuclei. We extend our recent DNO-SM approach within the\nVariation-After-Projection (VAP) scheme, dubbed as DNO-SM(VAP). This approach\nnaturally enables to a priori capture correlations more efficiently than the\nProjection-After-Variation (PAV) scheme which is commonly used in current\ntheoretical modelings of nuclei. Using the Kuo-Herling effective interaction,\nwe first examine the extended method by a systematic comparison of the binding\nenergies, the yrast spectra and electromagnetic moments of some representative\nnuclei of masses ranging from $A=251$ to $A=256$. The results show that the VAP\nscheme variationally provides more bound solutions with respect to the PAV\nscheme, reflecting the additional correlations that were captured. Both\nspectra, dipole and spectroscopic quadrupole moments are reproduced favorably.\nWe then focus on the case of $^{254}$No, one of the most studied elements\nexperimentally, which can be considered as the portal to the superheavy region.\nThe calculations show a striking agreement with the complete experimentally\nknown spectroscopy: the yrast band, the isomers and K bands, providing new\ninsights into its shell structure. The present successful description opens a\nnew way for forthcoming spectroscopic studies of heavy and superheavy nuclei.","PeriodicalId":501573,"journal":{"name":"arXiv - PHYS - Nuclear Theory","volume":"8 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"First complete shell-model description of $^{254}$No: a new paradigm for superheavy nuclear structure studies\",\"authors\":\"D. D. Dao, F. Nowacki\",\"doi\":\"arxiv-2409.08210\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this letter, we report the latest developments in the beyond mean-field\\nmethods applied to the shell-model framework for the the description of heavy\\ndeformed nuclei. We extend our recent DNO-SM approach within the\\nVariation-After-Projection (VAP) scheme, dubbed as DNO-SM(VAP). This approach\\nnaturally enables to a priori capture correlations more efficiently than the\\nProjection-After-Variation (PAV) scheme which is commonly used in current\\ntheoretical modelings of nuclei. Using the Kuo-Herling effective interaction,\\nwe first examine the extended method by a systematic comparison of the binding\\nenergies, the yrast spectra and electromagnetic moments of some representative\\nnuclei of masses ranging from $A=251$ to $A=256$. The results show that the VAP\\nscheme variationally provides more bound solutions with respect to the PAV\\nscheme, reflecting the additional correlations that were captured. Both\\nspectra, dipole and spectroscopic quadrupole moments are reproduced favorably.\\nWe then focus on the case of $^{254}$No, one of the most studied elements\\nexperimentally, which can be considered as the portal to the superheavy region.\\nThe calculations show a striking agreement with the complete experimentally\\nknown spectroscopy: the yrast band, the isomers and K bands, providing new\\ninsights into its shell structure. The present successful description opens a\\nnew way for forthcoming spectroscopic studies of heavy and superheavy nuclei.\",\"PeriodicalId\":501573,\"journal\":{\"name\":\"arXiv - PHYS - Nuclear Theory\",\"volume\":\"8 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Nuclear Theory\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.08210\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Nuclear Theory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.08210","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
First complete shell-model description of $^{254}$No: a new paradigm for superheavy nuclear structure studies
In this letter, we report the latest developments in the beyond mean-field
methods applied to the shell-model framework for the the description of heavy
deformed nuclei. We extend our recent DNO-SM approach within the
Variation-After-Projection (VAP) scheme, dubbed as DNO-SM(VAP). This approach
naturally enables to a priori capture correlations more efficiently than the
Projection-After-Variation (PAV) scheme which is commonly used in current
theoretical modelings of nuclei. Using the Kuo-Herling effective interaction,
we first examine the extended method by a systematic comparison of the binding
energies, the yrast spectra and electromagnetic moments of some representative
nuclei of masses ranging from $A=251$ to $A=256$. The results show that the VAP
scheme variationally provides more bound solutions with respect to the PAV
scheme, reflecting the additional correlations that were captured. Both
spectra, dipole and spectroscopic quadrupole moments are reproduced favorably.
We then focus on the case of $^{254}$No, one of the most studied elements
experimentally, which can be considered as the portal to the superheavy region.
The calculations show a striking agreement with the complete experimentally
known spectroscopy: the yrast band, the isomers and K bands, providing new
insights into its shell structure. The present successful description opens a
new way for forthcoming spectroscopic studies of heavy and superheavy nuclei.