Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions

Hagen T. W.; Goergen A.; Korten W.; Grente L.; Salsac M. -D.; Farget F.; Ragnarsson I.; Braunroth T.; Bruyneel B.; Celikovic I.; Clement E.; de France G.; Delaune O.; Dewald A.; Dijon A.; Hackstein M.; Jacquot B.; Litzinger J.; Ljungvall J.; Louchart C.; Michelagnoli C.; Napoli D. R.; Recchia F.; Rother W.; Sahin E.; Siem S.; Sulignano B.; Theisen Ch.; Valiente-Dobon J. J.

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Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions

机译：在裂变反应后寿命测量的奇数钇和铌同位素中核形状的演变

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Lifetimes of excited states in Y-99, Y-101, Nb-101, Nb-103, and Nb-105 were measured in an experiment using the recoil distance Doppler shift method at GANIL (Grand Accelerateur National d'Ions Lourds). The neutron-rich nuclei were produced in fission reactions between a U-238 beam and a Be-9 target. Prompt gamma rays were measured with the EXOGAM array and correlated with fission fragments that were identified in mass and atomic number with the VAMOS++ spectrometer. The measured lifetimes, together with branching ratios, provide B(M1) and B(E2) values for the strongly coupled rotational bands built on the [422] 5/2(+) ground state in the Y and Nb nuclei with neutron number N >= 60. The comparison of the experimental results with triaxial particle-rotor calculations provides information about the evolution of the nuclear shape in this mass region.

机译：在使用Ganil（Grand Accelateur National D'离子卢克斯）的反冲距离多普勒换档方法的实验中测量y-99，y-101，Nb-101，Nb-103和Nb-105中的兴奋状态。在U-238梁和BE-9靶之间的裂变反应中产生中子核的核。用exogam阵列测量提示伽马射线，并与vamos ++光谱仪以质量和原子数鉴定的裂变片段相关。测量的寿命与支化比，为y和Nb核在Y和NB核中的基于[422] 5/2（+）接地状态下的强耦合旋转带提供b（m1）和b（e2）值。 > = 60.使用三轴粒子 - 转子计算的实验结果的比较提供了关于该质量区域中核形状的演变的信息。

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《Physical review, C》 |2017年第3期|共17页
作者
Hagen T. W.; Goergen A.; Korten W.; Grente L.; Salsac M. -D.; Farget F.; Ragnarsson I.; Braunroth T.; Bruyneel B.; Celikovic I.; Clement E.; de France G.; Delaune O.; Dewald A.; Dijon A.; Hackstein M.; Jacquot B.; Litzinger J.; Ljungvall J.; Louchart C.; Michelagnoli C.; Napoli D. R.; Recchia F.; Rother W.; Sahin E.; Siem S.; Sulignano B.; Theisen Ch.; Valiente-Dobon J. J.;
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Univ Oslo Dept Phys Oslo Norway;

Univ Oslo Dept Phys Oslo Norway;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

Lund Univ LTH Div Math Phys Lund Sweden;

Univ Cologne Inst Kernphys Cologne Germany;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

Univ Cologne Inst Kernphys Cologne Germany;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

Univ Cologne Inst Kernphys Cologne Germany;

CNRS IN2P3 CEA DRF GANIL Blvd Henri Becquerel F-14076 Caen France;

Univ Cologne Inst Kernphys Cologne Germany;

IN2P3 CSNSM Orsay France;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

Ist Nazl Fis Nucl Lab Nazl Legnaro Legnaro Italy;

Ist Nazl Fis Nucl Lab Nazl Legnaro Legnaro Italy;

Univ Padua Dipartimento Fis &

Astron Padua Italy;

Univ Cologne Inst Kernphys Cologne Germany;

Univ Oslo Dept Phys Oslo Norway;

Univ Oslo Dept Phys Oslo Norway;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

Univ Paris Saclay CEA Irfu F-91191 Gif Sur Yvette France;

Ist Nazl Fis Nucl Lab Nazl Legnaro Legnaro Italy;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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1. Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions [J] . T. W. Hagen, A. Goergen, W. Korten, Physical Review C . 2017,第期

机译：裂变反应后寿命测量中奇数钇和铌同位素中核形状的演变
2. Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions [J] . T. W. Hagen, A. G?rgen, W. Korten, Physical review, C . 2017,第3期

机译：在裂变反应后寿命测量的奇数钇和铌同位素中核形状的演变
3. Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions [J] . Hagen T. W., Goergen A., Korten W., Physical review, C . 2017,第3期

机译：在裂变反应后寿命测量的奇数钇和铌同位素中核形状的演变
4. Piezonuclear fission reactions produced by fracture and earthquakes:From the chemical evolution of our planet to the so-called cold fusion [C] . Alberto Carpinteri 13th International conference on fracture . 2013

机译：断裂和地震引起的压电核裂变反应：从我们星球的化学演化到所谓的冷聚变
5. A study of the kinetics and microstructure evolution during reactions of niobium/aluminum and titanium/aluminum multilayer thin-films. [D] . Lucadamo, Gene Anthony. 2000

机译：铌/铝和钛/铝多层薄膜反应过程中动力学和微观结构演变的研究。
6. Measurements of extinct fission products in nuclear bomb debris: Determination of the yield of the Trinity nuclear test 70 y later [O] . Susan K. Hanson, Anthony D. Pollington, Christopher R. Waidmann, 2016

机译：测量核弹碎片中已灭绝的裂变产物：70年后确定三位一体核试验的产率
7. Shape evolution in yttrium and niobium neutron-rich isotopes [O] . Rodriguez-Guzmán, R., Sarriguren, Pedro, Robledo, L.M. 2011

机译：钇和富铌中子同位素的形状演化
8. Evolution of Nuclear Shapes at High Spins as Determined by Lifetime Measurements [R] . Johnson, N. 1986

机译：通过寿命测量确定高旋转核形状的演变

Evolution of nuclear shapes in odd-mass yttrium and niobium isotopes from lifetime measurements following fission reactions

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