In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap

John P. R.; Valiente-Dobon J. J.; Mengoni D.; Modamio V.; Lunardi S.; Bazzacco D.; Gadea A.; Wheldon C.; Rodriguez T. R.; Alexander T.; de Angelis G.; Ashwood N.; Barr M.; Benzoni G.; Birkenbach B.; Bizzeti P. G.; Bizzeti-Sona A. M.; Bottoni S.; Bowry M.; Bracco A.; Browne F.; Bunce M.; Camera F.; Corradi L.; Crespi F. C. L.; Melon B.; Farnea E.; Fioretto E.; Gottardo A.; Grente L.; Hess H.; Kokalova Tz.; Korten W.; Kusoglu A.; Lenzi S.; Leoni S.; Ljungvall J.; Menegazzo R.; Michelagnoli C.; Mijatovic T.; Montagnoli G.; Montanari D.; Napoli D. R.; Podolyak Zs.; Pollarolo G.; Recchia F.; Reiter P.; Roberts O. J.; Sahin E.; Salsac M. -D.; Scarlassara F.; Sferrazza M.; Soderstrom P. -A.; Stefanini A. M.; Szilner S.; Ur C. A.; Vogt A.; Walshe J.

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In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap

机译：中子型铂的内轭伽马射线谱仪Pt-200朝向n = 126壳间隙

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The neutron-rich nucleus Pt-200 is investigated via in-beam gamma-ray spectroscopy to study the shape evolution in the neutron-rich platinum isotopes towards the N = 126 shell closure. The two-neutron transfer reaction Pt-198(Se-82, Se-80)Pt-200 is used to populate excited states of Pt-200. The Advanced Gamma Ray Tracking Array (AGATA) demonstrator coupled with the PRISMA spectrometer detects gamma rays coincident with the Se-80 recoils, the binary partner of Pt-200. The binary partner method is applied to extract the gamma-ray transitions and build the level scheme of Pt-200. The level at 1884 keV reported by Yates et al. [S. W. Yates, E. M. Baum, E. A. Henry, L. G. Mann, N. Roy, A. Aprahamian, R. A. Meyer, and R. Estep, Phys. Rev. C 37, 1889 (1988)] was confirmed to be at 1882.1 keV and assigned as the (6(1)(+)) state. An additional gamma ray was found and it presumably deexcites the (8(1)(+)) state. The results are compared with state-of-the-art beyond mean-field calculations, performed for the even-even Pt190-204 isotopes, revealing that Pt-200 marks the transition from the gamma-unstable behavior of lighter Pt nuclei towards a more spherical one when approaching the N = 126 shell closure.

机译：通过束型γ射线光谱研究了中子核PT-200，以研究富含中子铂同位素的形状演变，朝向n = 126壳封闭。双中子转移反应Pt-198（SE-82，SE-80）PT-200用于填充PT-200的激发态。高级伽马射线跟踪阵列（AGATA）演示与PRISMA光谱仪一起检测与SE-80反冲的伽马光线，PT-200的二进制伴侣。应用二进制伙伴方法以提取伽马射线转换并构建PT-200的级别方案。 Yates等人报告的1884 kev的水平。 [S. W. Yates，E.M.Baum，E.A.Henry，L.G.Mann，N.Roy，A. Aprahamian，R. A. Meyer和R. Estep，Phy。 Rev. C 37,1899（1988）]确认为1882.1 keV，并指定为（6（1）（+））州。发现另外的伽马射线，可能会释放（8（1）（+））状态。将结果与最先进的超出平均场计算进行比较，对于偶数-E1即使是pt190-204同位素而言，揭示Pt-200标志着从更轻的Pt核的伽马不稳定行为转变为更多接近n = 126壳封闭时的球形。

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来源
《Physical review, C》 |2017年第6期|共8页
作者
John P. R.; Valiente-Dobon J. J.; Mengoni D.; Modamio V.; Lunardi S.; Bazzacco D.; Gadea A.; Wheldon C.; Rodriguez T. R.; Alexander T.; de Angelis G.; Ashwood N.; Barr M.; Benzoni G.; Birkenbach B.; Bizzeti P. G.; Bizzeti-Sona A. M.; Bottoni S.; Bowry M.; Bracco A.; Browne F.; Bunce M.; Camera F.; Corradi L.; Crespi F. C. L.; Melon B.; Farnea E.; Fioretto E.; Gottardo A.; Grente L.; Hess H.; Kokalova Tz.; Korten W.; Kusoglu A.; Lenzi S.; Leoni S.; Ljungvall J.; Menegazzo R.; Michelagnoli C.; Mijatovic T.; Montagnoli G.; Montanari D.; Napoli D. R.; Podolyak Zs.; Pollarolo G.; Recchia F.; Reiter P.; Roberts O. J.; Sahin E.; Salsac M. -D.; Scarlassara F.; Sferrazza M.; Soderstrom P. -A.; Stefanini A. M.; Szilner S.; Ur C. A.; Vogt A.; Walshe J.;
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Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Ist Nazl Fis Nucl Sez Padova I-35131 Padua Italy;

Univ Valencia CSIC Inst Fis Corpuscular E-46980 Valencia Spain;

Univ Birmingham Sch Phys &

Astron Birmingham B15 2TT W Midlands England;

Tech Univ Darmstadt Inst Kernphys D-64289 Darmstadt Germany;

Univ Surrey Dept Phys Guildford GU2 7XH Surrey England;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Univ Birmingham Sch Phys &

Astron Birmingham B15 2TT W Midlands England;

Univ Birmingham Sch Phys &

Astron Birmingham B15 2TT W Midlands England;

Univ Milan Dipartimento Fis I-20133 Milan Italy;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Firenze Dipartimento Fis I-50019 Florence Italy;

Univ Firenze Dipartimento Fis I-50019 Florence Italy;

Univ Milan Dipartimento Fis I-20133 Milan Italy;

Univ Surrey Dept Phys Guildford GU2 7XH Surrey England;

Univ Milan Dipartimento Fis I-20133 Milan Italy;

Univ Brighton Sch Comp Engn &

Math Brighton BN2 4GJ E Sussex England;

Univ Surrey Dept Phys Guildford GU2 7XH Surrey England;

Univ Milan Dipartimento Fis I-20133 Milan Italy;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Univ Milan Dipartimento Fis I-20133 Milan Italy;

Univ Firenze Dipartimento Fis I-50019 Florence Italy;

Ist Nazl Fis Nucl Sez Padova I-35131 Padua Italy;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Ctr CEA Saclay CEA DSM Inst Rech Lois Fondament Univers IRFU F-91191 Gif Sur Yvette France;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Birmingham Sch Phys &

Astron Birmingham B15 2TT W Midlands England;

Ctr CEA Saclay CEA DSM Inst Rech Lois Fondament Univers IRFU F-91191 Gif Sur Yvette France;

Istanbul Univ Fac Sci Dept Phys TR-34134 Istanbul Turkey;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Univ Milan Dipartimento Fis I-20133 Milan Italy;

IN2P3 CNRS CSNSM Orsay Campus F-91405 Orsay France;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Inst Ruder Boskovic HR-10000 Zagreb Croatia;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Univ Surrey Dept Phys Guildford GU2 7XH Surrey England;

Univ Torino Dipartimento Fis Teor I-10125 Turin Italy;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Brighton Sch Comp Engn &

Math Brighton BN2 4GJ E Sussex England;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

Ctr CEA Saclay CEA DSM Inst Rech Lois Fondament Univers IRFU F-91191 Gif Sur Yvette France;

Univ Padua Dipartimento Fis &

Astron I-35131 Padua Italy;

Univ Libre Bruxelles Dept Phys B-1050 Brussels Belgium;

Uppsala Univ Dept Phys &

Astron SE-75120 Uppsala Sweden;

Ist Nazl Fis Nucl Lab Nazl Legnaro I-35020 Legnaro Italy;

IN2P3 CNRS CSNSM Orsay Campus F-91405 Orsay France;

Ist Nazl Fis Nucl Sez Padova I-35131 Padua Italy;

Univ Cologne Inst Kernphys D-50937 Cologne Germany;

Univ Birmingham Sch Phys &

Astron Birmingham B15 2TT W Midlands England;

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专利

1. In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap [J] . John P. R., Valiente-Dobon J. J., Mengoni D., Physical review, C . 2017,第6期

机译：中子型铂的内轭伽马射线谱仪Pt-200朝向n = 126壳间隙
2. In-beam γ -ray spectroscopy of the neutron-rich platinum isotope ~(200)Pt toward the N = 126 shell gap [J] . P. R. John, J. J. Valiente-Dobon, D. Mengoni, Physical Review C . 2017,第期

机译：中子富铂同位素〜（200）Pt朝向n = 126壳间隙
3. In-beam gamma-ray spectroscopy and shell-model description of Y-85,Y-86 isotopes [J] . Rusu C, Ur CA, Bucurescu D, Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions . 2009,第1a2期

机译：Y-85，Y-86同位素的束内伽玛射线光谱学和壳模型描述
4. Deformation of the neutron-rich isotope ~(34)Mg studied via in-beam gamma-ray spectroscopy using two-step fragmentation [C] . K. Yoneda, H. Sakurai, T. Gomi, International Nuclear Physics Conference . 2002

机译：使用两步碎片通过束束γ射线光谱研究中子富含同位素〜（34）Mg的变形
5. Search for Shape Transitions in Neutron-rich W isotopes and Optimizing Hole Mobilities for Gamma-Ray Tracking. [D] . Prasher, Vikram Singh. 2015

机译：在富中子的W同位素中寻找形状转变，并为Gamma射线跟踪优化空穴迁移率。
6. In-beam γ -ray spectroscopy of the neutron-rich platinum isotope Pt200 toward the N=126 shell gap [O] . P. R. John, J. J. Valiente-Dobón, D. Mengoni, 2017

机译：中子富铂同位素Pt200朝向n = 126壳间隙

In-beam gamma-ray spectroscopy of the neutron-rich platinum isotope Pt-200 toward the N=126 shell gap

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