{"title":"A=245的核数据表","authors":"C.D. Nesaraja","doi":"10.1016/j.nds.2023.04.001","DOIUrl":null,"url":null,"abstract":"<div><p>Available information pertaining to the nuclear structure of ground and excited states for all known nuclei with mass numbers A=245 have been compiled and evaluated. The adopted level and decay schemes, as well as the detailed nuclear properties and configuration assignments based on experimental data, are presented for these nuclides. When there are insufficient data, expected values from systematics of nuclear properties and/or theoretical calculations are utilized. Unexpected or discrepant experimental results are also noted. Since the last evaluation, new rotational bands in <sup>245</sup>Pu have been observed to high spin from transfer reaction <sup>244</sup>Pu(<sup>209</sup>Bi, <sup>208</sup>Bi<em>γ</em>) by 2014Ho16. While in <sup>245</sup>Am, the <sup>249</sup>Bk <em>α</em> decay measurements by 2013Ah03 added a new rotational band based on <em>π</em>3/2[521] configuration. The <sup>245</sup>Pu <em>β</em><sup>−</sup> decay scheme is basically what was proposed in the late 60's and 47 <em>γ</em> rays have still not been placed. In <sup>245</sup>Cm, precise alpha energies and intensities were measured by 2015Ah03 in <sup>249</sup>Cf <em>α</em> decay. Their reported alpha energies of the main <em>α</em> group were about 2 keV lower than in the previous evaluation. The spin and parity of the g.s. of <sup>245</sup>Es is still ambiguous as more detailed information on the decay is needed. With the production of <sup>249</sup>No via fusion evaporation reaction by groups in Dubna and GSI, it's alpha decay was studied and some properties of the daughter <sup>245</sup>Fm were published and included in this evalaution. Information on the other nuclides is scarce and not much has been investigated since the last evaluation. A summary and compilation of the discovery of the various nuclides in this mass region is given in: 2013Fr02 (<sup>245</sup>Pu, <sup>245</sup>Am, <sup>245</sup>Cm, <sup>245</sup>Bk, <sup>245</sup>Cf), 2011Me01 (<sup>245</sup>Es), and 2013Th02 (<sup>245</sup>Md, <sup>245</sup>Fm).</p></div>","PeriodicalId":49735,"journal":{"name":"Nuclear Data Sheets","volume":"189 ","pages":"Pages 1-110"},"PeriodicalIF":2.8000,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nuclear Data Sheets for A=245\",\"authors\":\"C.D. Nesaraja\",\"doi\":\"10.1016/j.nds.2023.04.001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Available information pertaining to the nuclear structure of ground and excited states for all known nuclei with mass numbers A=245 have been compiled and evaluated. The adopted level and decay schemes, as well as the detailed nuclear properties and configuration assignments based on experimental data, are presented for these nuclides. When there are insufficient data, expected values from systematics of nuclear properties and/or theoretical calculations are utilized. Unexpected or discrepant experimental results are also noted. Since the last evaluation, new rotational bands in <sup>245</sup>Pu have been observed to high spin from transfer reaction <sup>244</sup>Pu(<sup>209</sup>Bi, <sup>208</sup>Bi<em>γ</em>) by 2014Ho16. While in <sup>245</sup>Am, the <sup>249</sup>Bk <em>α</em> decay measurements by 2013Ah03 added a new rotational band based on <em>π</em>3/2[521] configuration. The <sup>245</sup>Pu <em>β</em><sup>−</sup> decay scheme is basically what was proposed in the late 60's and 47 <em>γ</em> rays have still not been placed. In <sup>245</sup>Cm, precise alpha energies and intensities were measured by 2015Ah03 in <sup>249</sup>Cf <em>α</em> decay. Their reported alpha energies of the main <em>α</em> group were about 2 keV lower than in the previous evaluation. The spin and parity of the g.s. of <sup>245</sup>Es is still ambiguous as more detailed information on the decay is needed. With the production of <sup>249</sup>No via fusion evaporation reaction by groups in Dubna and GSI, it's alpha decay was studied and some properties of the daughter <sup>245</sup>Fm were published and included in this evalaution. Information on the other nuclides is scarce and not much has been investigated since the last evaluation. A summary and compilation of the discovery of the various nuclides in this mass region is given in: 2013Fr02 (<sup>245</sup>Pu, <sup>245</sup>Am, <sup>245</sup>Cm, <sup>245</sup>Bk, <sup>245</sup>Cf), 2011Me01 (<sup>245</sup>Es), and 2013Th02 (<sup>245</sup>Md, <sup>245</sup>Fm).</p></div>\",\"PeriodicalId\":49735,\"journal\":{\"name\":\"Nuclear Data Sheets\",\"volume\":\"189 \",\"pages\":\"Pages 1-110\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2023-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Data Sheets\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0090375223000339\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Data Sheets","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0090375223000339","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
Available information pertaining to the nuclear structure of ground and excited states for all known nuclei with mass numbers A=245 have been compiled and evaluated. The adopted level and decay schemes, as well as the detailed nuclear properties and configuration assignments based on experimental data, are presented for these nuclides. When there are insufficient data, expected values from systematics of nuclear properties and/or theoretical calculations are utilized. Unexpected or discrepant experimental results are also noted. Since the last evaluation, new rotational bands in 245Pu have been observed to high spin from transfer reaction 244Pu(209Bi, 208Biγ) by 2014Ho16. While in 245Am, the 249Bk α decay measurements by 2013Ah03 added a new rotational band based on π3/2[521] configuration. The 245Pu β− decay scheme is basically what was proposed in the late 60's and 47 γ rays have still not been placed. In 245Cm, precise alpha energies and intensities were measured by 2015Ah03 in 249Cf α decay. Their reported alpha energies of the main α group were about 2 keV lower than in the previous evaluation. The spin and parity of the g.s. of 245Es is still ambiguous as more detailed information on the decay is needed. With the production of 249No via fusion evaporation reaction by groups in Dubna and GSI, it's alpha decay was studied and some properties of the daughter 245Fm were published and included in this evalaution. Information on the other nuclides is scarce and not much has been investigated since the last evaluation. A summary and compilation of the discovery of the various nuclides in this mass region is given in: 2013Fr02 (245Pu, 245Am, 245Cm, 245Bk, 245Cf), 2011Me01 (245Es), and 2013Th02 (245Md, 245Fm).
期刊介绍:
The Nuclear Data Sheets are current and are published monthly. They are devoted to compilation and evaluations of experimental and theoretical results in Nuclear Physics. The journal is mostly produced from Evaluated Nuclear Structure Data File (ENSDF), a computer file maintained by the US National Nuclear Data Center