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DOE OSTI ยท 3015202

Lifetimes of two- and four-neutron-hole states in 204 Pb and 206 Pb

Suman, Saket [Shiv Nadar Institution of Eminence, Delhi-NCR (India); University of Naples Federico II (Italy); National Institute of Nuclear Physics (INFN), Naples (Italy)] (ORCID:0000000346630019)ยทTandel, S. K. [Shiv Nadar Institution of Eminence, Delhi-NCR (India); University of Massachusetts, Lowell, MA (United States)] (ORCID:0000000347843139)ยทKaushik, Jay [Shiv Nadar Institution of Eminence, Delhi-NCR (India)] (ORCID:0009000262175984)ยทHemalatha, M. [University of Mumbai (India)] (ORCID:0000000315513856)ยทBothe, V. [Max-Planck-Institut fur Kernphysik, Heidelberg (Germany)] (ORCID:0000000216906929)ยทYuan, Cenxi [Sun Yat-Sen University, Guangdong (China)] (ORCID:0000000234953614)ยทShimizu, Noritaka [University of Tsukuba (Japan)] (ORCID:0000000316381066)ยทChowdhury, P. [University of Massachusetts, Lowell, MA (United States)]ยทJanssens, R. V. F. [University of North Carolina at Chapel Hill, NC (United States); Duke University, Durham, NC (United States)] (ORCID:0000000170951715)ยทKondev, F. G. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000295675785)ยทCarpenter, M. P. [Argonne National Laboratory (ANL), Argonne, IL (United States)]ยทLauritsen, T. [Argonne National Laboratory (ANL), Argonne, IL (United States)]ยทSeweryniak, D. [Argonne National Laboratory (ANL), Argonne, IL (United States)]
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Abstract

The centroid-shift method was used to determine half-lives of excited levels in 204 Pb and 206 Pb. For the states with ๐ผ ๐œ‹ = 12 + , 17 โˆ’ , and 19 โˆ’ in 204 Pb, values of ๐‘‡ 1/2 = 4.9โข(3), 3.9(3), and 0.9(3) ns, respectively, were determined. The half-life of the ๐ผ ๐œ‹ = 9 โˆ’ level in 206 Pb was measured to be 1.1(3) ns. In 204 Pb, the 12 + state arises from two neutron holes in the ๐‘– 13/2 subshell, while the 17 โˆ’ and 19 โˆ’ levels are built on ๐œˆโก(๐‘–$^{โˆ’3}_{13/2}$, ๐‘$^{โˆ’1}_{1/2}$) and ๐œˆโก(๐‘–$^{โˆ’3}_{13/2}$, ๐‘“$^{โˆ’1}_{5/2}$) four-neutron-hole configurations, respectively. The 9 โˆ’ state in 206 Pb results from a ๐œˆโก(๐‘–$^{โˆ’1}_{13/2}$, ๐‘“${โˆ’1}_{5/2}$) excitation. As a result, the transition probabilities for the decay of these isomeric levels are reasonably consistent with the expected single-particle values, and these states are described well by shell-model calculations using the kshell code with the KHHE interaction.

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190 โ‰ค A โ‰ค 219High spin statesIsomer decaysLifetimes & widthsNuclear structure & decaysShell model

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Suman, Saket [Shiv Nadar Institution of Eminence, Delhi-NCR (India); University of Naples Federico II (Italy); National Institute of Nuclear Physics (INFN), Naples (Italy)] (ORCID:0000000346630019), Tandel, S. K. [Shiv Nadar Institution of Eminence, Delhi-NCR (India); University of Massachusetts, Lowell, MA (United States)] (ORCID:0000000347843139), Kaushik, Jay [Shiv Nadar Institution of Eminence, Delhi-NCR (India)] (ORCID:0009000262175984), Hemalatha, M. [University of Mumbai (India)] (ORCID:0000000315513856), Bothe, V. [Max-Planck-Institut fur Kernphysik, Heidelberg (Germany)] (ORCID:0000000216906929), Yuan, Cenxi [Sun Yat-Sen University, Guangdong (China)] (ORCID:0000000234953614), Shimizu, Noritaka [University of Tsukuba (Japan)] (ORCID:0000000316381066), Chowdhury, P. [University of Massachusetts, Lowell, MA (United States)], Janssens, R. V. F. [University of North Carolina at Chapel Hill, NC (United States); Duke University, Durham, NC (United States)] (ORCID:0000000170951715), Kondev, F. G. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000295675785), Carpenter, M. P. [Argonne National Laboratory (ANL), Argonne, IL (United States)], Lauritsen, T. [Argonne National Laboratory (ANL), Argonne, IL (United States)], Seweryniak, D. [Argonne National Laboratory (ANL), Argonne, IL (United States)]. 2026-01-22. Lifetimes of two- and four-neutron-hole states in 204 Pb and 206 Pb. https://doi.org/10.1103/11z7-2b3t

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