A.A. Valverde , F.G. Kondev , B. Liu , D. Ray , M. Brodeur , D.P. Burdette , N. Callahan , A. Cannon , J.A. Clark , D.E.M. Hoff , R. Orford , W.S. Porter , G. Savard , K.S. Sharma , L. Varriano
{"title":"利用加拿大潘宁陷阱对 A = 133 等值线进行精确质量测量:解决 133Te 的 Qβ- 异常现象","authors":"A.A. Valverde , F.G. Kondev , B. Liu , D. Ray , M. Brodeur , D.P. Burdette , N. Callahan , A. Cannon , J.A. Clark , D.E.M. Hoff , R. Orford , W.S. Porter , G. Savard , K.S. Sharma , L. Varriano","doi":"10.1016/j.physletb.2024.139037","DOIUrl":null,"url":null,"abstract":"<div><div>We report precision mass measurements of <sup>133</sup>Sb, <span><math><msup><mrow></mrow><mrow><mn>133</mn><mi>g</mi><mo>,</mo><mi>m</mi></mrow></msup></math></span>Te, and <span><math><msup><mrow></mrow><mrow><mn>133</mn><mi>g</mi><mo>,</mo><mi>m</mi></mrow></msup></math></span>I, produced at CARIBU at Argonne National Laboratory's ATLAS facility and measured using the Canadian Penning Trap mass spectrometer. These masses clarify an anomaly in the <sup>133</sup>Te <em>β</em>-decay. The masses reported in the 2020 Atomic Mass Evaluation (M. Wang et al., 2021) produce <span><math><msub><mrow><mi>Q</mi></mrow><mrow><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></msub><mo>(</mo><msup><mrow></mrow><mrow><mn>133</mn></mrow></msup></math></span>Te)=2920(6) keV; however, the highest-lying <sup>133</sup>I level populated in this decay is observed at <span><math><msub><mrow><mi>E</mi></mrow><mrow><mi>i</mi></mrow></msub><mo>=</mo><mn>2935.83</mn><mo>(</mo><mn>15</mn><mo>)</mo></math></span> keV, resulting in an anomalous <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow><mrow><mi>i</mi></mrow></msubsup><mo>=</mo><mo>−</mo><mn>16</mn><mo>(</mo><mn>6</mn><mo>)</mo></math></span> keV. Our new measurements give <span><math><msub><mrow><mi>Q</mi></mrow><mrow><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></msub><mo>(</mo><mmultiscripts><mrow><mtext>Te</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>133</mn></mrow></mmultiscripts><mo>)</mo><mo>=</mo><mn>2934.8</mn><mo>(</mo><mn>11</mn><mo>)</mo></math></span> keV, a factor of five more precise, yielding <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><mi>β</mi></mrow><mrow><mi>i</mi></mrow></msubsup><mo>=</mo><mo>−</mo><mn>1.0</mn><mo>(</mo><mn>12</mn><mo>)</mo></math></span> keV, a 3<em>σ</em> shift from the previous results. This resolves this anomaly, but indicates further anomalies in our understanding of the structure of this isotope.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"858 ","pages":"Article 139037"},"PeriodicalIF":4.3000,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0370269324005951/pdfft?md5=a2d63dafc7095842ad61a143db9ace16&pid=1-s2.0-S0370269324005951-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Precise mass measurements of A = 133 isobars with the Canadian Penning Trap: Resolving the Qβ− anomaly at 133Te\",\"authors\":\"A.A. Valverde , F.G. Kondev , B. Liu , D. Ray , M. Brodeur , D.P. Burdette , N. Callahan , A. Cannon , J.A. Clark , D.E.M. Hoff , R. Orford , W.S. Porter , G. Savard , K.S. Sharma , L. Varriano\",\"doi\":\"10.1016/j.physletb.2024.139037\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We report precision mass measurements of <sup>133</sup>Sb, <span><math><msup><mrow></mrow><mrow><mn>133</mn><mi>g</mi><mo>,</mo><mi>m</mi></mrow></msup></math></span>Te, and <span><math><msup><mrow></mrow><mrow><mn>133</mn><mi>g</mi><mo>,</mo><mi>m</mi></mrow></msup></math></span>I, produced at CARIBU at Argonne National Laboratory's ATLAS facility and measured using the Canadian Penning Trap mass spectrometer. These masses clarify an anomaly in the <sup>133</sup>Te <em>β</em>-decay. The masses reported in the 2020 Atomic Mass Evaluation (M. Wang et al., 2021) produce <span><math><msub><mrow><mi>Q</mi></mrow><mrow><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></msub><mo>(</mo><msup><mrow></mrow><mrow><mn>133</mn></mrow></msup></math></span>Te)=2920(6) keV; however, the highest-lying <sup>133</sup>I level populated in this decay is observed at <span><math><msub><mrow><mi>E</mi></mrow><mrow><mi>i</mi></mrow></msub><mo>=</mo><mn>2935.83</mn><mo>(</mo><mn>15</mn><mo>)</mo></math></span> keV, resulting in an anomalous <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow><mrow><mi>i</mi></mrow></msubsup><mo>=</mo><mo>−</mo><mn>16</mn><mo>(</mo><mn>6</mn><mo>)</mo></math></span> keV. Our new measurements give <span><math><msub><mrow><mi>Q</mi></mrow><mrow><msup><mrow><mi>β</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></msub><mo>(</mo><mmultiscripts><mrow><mtext>Te</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mn>133</mn></mrow></mmultiscripts><mo>)</mo><mo>=</mo><mn>2934.8</mn><mo>(</mo><mn>11</mn><mo>)</mo></math></span> keV, a factor of five more precise, yielding <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><mi>β</mi></mrow><mrow><mi>i</mi></mrow></msubsup><mo>=</mo><mo>−</mo><mn>1.0</mn><mo>(</mo><mn>12</mn><mo>)</mo></math></span> keV, a 3<em>σ</em> shift from the previous results. This resolves this anomaly, but indicates further anomalies in our understanding of the structure of this isotope.</div></div>\",\"PeriodicalId\":20162,\"journal\":{\"name\":\"Physics Letters B\",\"volume\":\"858 \",\"pages\":\"Article 139037\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-09-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0370269324005951/pdfft?md5=a2d63dafc7095842ad61a143db9ace16&pid=1-s2.0-S0370269324005951-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics Letters B\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0370269324005951\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics Letters B","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0370269324005951","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
Precise mass measurements of A = 133 isobars with the Canadian Penning Trap: Resolving the Qβ− anomaly at 133Te
We report precision mass measurements of 133Sb, Te, and I, produced at CARIBU at Argonne National Laboratory's ATLAS facility and measured using the Canadian Penning Trap mass spectrometer. These masses clarify an anomaly in the 133Te β-decay. The masses reported in the 2020 Atomic Mass Evaluation (M. Wang et al., 2021) produce Te)=2920(6) keV; however, the highest-lying 133I level populated in this decay is observed at keV, resulting in an anomalous keV. Our new measurements give keV, a factor of five more precise, yielding keV, a 3σ shift from the previous results. This resolves this anomaly, but indicates further anomalies in our understanding of the structure of this isotope.
期刊介绍:
Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.