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

T. W. Hagen | Zendy; A. Görgen | Zendy; W. Korten | Zendy; L. Grente | Zendy; M.-D. Salsac | Zendy; F. Farget | Zendy; I. Ragnarsson | Zendy; T. Braunroth | Zendy; B. Bruyneel | Zendy; Igor Čelikovíć | Zendy; E. Clément | Zendy; G. de France | Zendy; O. Delaune | Zendy; Α. Dewald | Zendy; A. Dijon | Zendy; M. Hackstein | Zendy; B. Jacquot | Zendy; J. Litzinger | Zendy; J. Ljungvall | Zendy; C. Louchart | Zendy; C. Michelagnoli | Zendy; D. R. Napoli | Zendy; F. Recchia | Zendy; W. Rother | Zendy; E. Şahin | Zendy; S. Siem | Zendy; B. Sulignano | Zendy; Ch. Theisen | Zendy; J. J. Valiente-Dobón | Zendy

Open Access

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

Author(s) -

T. W. Hagen,

A. Görgen,

W. Korten,

L. Grente,

M.-D. Salsac,

F. Farget,

I. Ragnarsson,

T. Braunroth,

B. Bruyneel,

Igor Čelikovíć,

E. Clément,

G. de France,

O. Delaune,

Α. Dewald,

A. Dijon,

M. Hackstein,

B. Jacquot,

J. Litzinger,

J. Ljungvall,

C. Louchart,

C. Michelagnoli,

D. R. Napoli,

F. Recchia,

W. Rother,

E. Şahin,

S. Siem,

B. Sulignano,

Ch. Theisen,

J. J. Valiente-Dobón

Publication year - 2017

Publication title -

physical review. c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.679

H-Index - 235

eISSN - 2469-9993

pISSN - 2469-9985

DOI - 10.1103/physrevc.95.034302

Subject(s) - physics , fission , nuclear physics , atomic physics , neutron , isotope , nuclear reaction , excited state

International audienceLifetimes of excited states in ${}^{99}$Y , ${}^{101}$Y, ${}^{101}$Nb, ${}^{103}$Nb, and ${}^{105}$Nb were measured in an experiment using the recoil distance Doppler shift method at GANIL (Grand Accélérateur National d’Ions Lourds). The neutron-richnuclei were produced in fission reactions between a ${}^{238}$U beam and a ${}^9$Be target. Prompt γ rays were measuredwith the EXOGAM array and correlated with fission fragments that were identified in mass and atomic numberwith the VAMOS$\ {++}$ spectrometer. The measured lifetimes, together with branching ratios, provide $\it B(M1)$ and$\it B(E2)$ values for the strongly coupled rotational bands built on the [422]5/2$^+$ ground state in the Y and Nb nucleiwith neutron number N $\geq$ 60. The comparison of the experimental results with triaxial particle-rotor calculationsprovides information about the evolution of the nuclear shape in this mass region

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