$\gamma$-ray linear polarization measurements and $(g_{9/2})^{-3}$ neutron alignment in $^{91}$Ru

Y. Zheng; G. de France; E. Clément; A. Dijon; B. Cederwall; R. Wadsworth; T. Bäck; F. Ghazi Moradi; G. Jaworski; B. M. Nyakó; J. Nyberg; M. Palacz; H. Al-Azri; G. de Angelis; A. Atac; Ö. Aktaş; S. Bhattacharyya; T. Brock; P. J. Davies; A. Di Nitto; Zs. Dombradi; A. Gadea; J. Gal; P. Joshi; K. Juhasz; R. Julin; A. Jungclaus; G. Kalinka; J. Kownacki; G. La Rana; S. M. Lenzi; J. Molnar; R. Moro; D. R. Napoli; B. S. Nara Singh; A. Persson; F. Recchia; M. Sandzelius; J. -N. Scheurer; G. Sletten; D. Sohler; P. -A. Söderström; M. J. Taylor; J. Timar; J. J. Valiente-Dobon; E. Vardaci

doi:10.1103/PhysRevC.87.044328

Journal Articles Physical Review C Year : 2013

$\gamma$-ray linear polarization measurements and $(g_{9/2})^{-3}$ neutron alignment in $^{91}$Ru

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Y. Zheng

Function : Author
PersonId : 740976
IdHAL : jacques-yunlin-zheng
ORCID : 0000-0001-8964-5603

Grand Accélérateur National d'Ions Lourds

G. de France

Function : Author

Grand Accélérateur National d'Ions Lourds

E. Clément

Function : Author

Grand Accélérateur National d'Ions Lourds

A. Dijon

Function : Author

Grand Accélérateur National d'Ions Lourds

B. Cederwall

Function : Author

R. Wadsworth

Function : Author

T. Bäck

Function : Author

F. Ghazi Moradi

Function : Author

G. Jaworski

Function : Author

B. M. Nyakó

Function : Author

J. Nyberg

Function : Author

M. Palacz

Function : Author

H. Al-Azri

Function : Author

G. de Angelis

Function : Author

A. Atac

Function : Author

Ö. Aktaş

Function : Author

S. Bhattacharyya

Function : Author

Grand Accélérateur National d'Ions Lourds

T. Brock

Function : Author

P. J. Davies

Function : Author

A. Di Nitto

Function : Author

Zs. Dombradi

Function : Author

A. Gadea

Function : Author

J. Gal

Function : Author

P. Joshi

Function : Author

K. Juhasz

Function : Author

R. Julin

Function : Author

A. Jungclaus

Function : Author

G. Kalinka

Function : Author

J. Kownacki

Function : Author

G. La Rana

Function : Author

S. M. Lenzi

Function : Author

J. Molnar

Function : Author

R. Moro

Function : Author

D. R. Napoli

Function : Author

B. S. Nara Singh

Function : Author

A. Persson

Function : Author

F. Recchia

Function : Author

M. Sandzelius

Function : Author

J. -N. Scheurer

Function : Author

G. Sletten

Function : Author

D. Sohler

Function : Author
PersonId : 755248
ORCID : 0000-0002-9250-135X

P. -A. Söderström

Function : Author

M. J. Taylor

Function : Author

J. Timar

Function : Author

J. J. Valiente-Dobon

Function : Author

E. Vardaci

Function : Author

Abstract

Linear polarization measurements have been performed for $\gamma$-rays in $^{91}$Ru produced with the $^{58}$Ni($^{36}$Ar, $2p1n$$\gamma$)$^{91}$Ru reaction at a beam energy of 111 MeV. The EXOGAM Ge clover array has been used to measure the $\gamma$-$\gamma$ coincidences, $\gamma$-ray linear polarization and $\gamma$-ray angular distributions. The polarization sensitivity of the EXOGAM clover detectors acting as Compton polarimeters has been determined in the energy range 0.3$-$1.3 MeV. Several transitions have been observed for the first time. Measurements of linear polarization and angular distribution have led to the firm assignments of spin differences and parity of high-spin states in $^{91}$Ru. More specifically, calculations using a semi-empirical shell model were performed to understand the structures of the first and second (21/2$^{+}$) and (17/2$^{+}$) levels. The results are in good agreement with the experimental data, supporting the interpretation of the non yrast (21/2$^{+}$) and (17/2$^{+}$) states in terms of the $J_{\rm max}$ and $J_{\rm max}-2$ members of the seniority-three $\nu(g_{9/2})^{-3}$ multiplet.

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Nuclear Experiment [nucl-ex]

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https://in2p3.hal.science/in2p3-00812347

Submitted on : Friday, April 12, 2013-9:11:28 AM

Last modification on : Thursday, April 11, 2024-1:18:12 PM

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in2p3-00812347 , version 1 (12-04-2013)

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HAL Id : in2p3-00812347 , version 1
ARXIV : 1304.3287
DOI : 10.1103/PhysRevC.87.044328

Cite

Y. Zheng, G. de France, E. Clément, A. Dijon, B. Cederwall, et al.. $\gamma$-ray linear polarization measurements and $(g_{9/2})^{-3}$ neutron alignment in $^{91}$Ru. Physical Review C, 2013, 87, pp.044328. ⟨10.1103/PhysRevC.87.044328⟩. ⟨in2p3-00812347⟩

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$\gamma$-ray linear polarization measurements and $(g_{9/2})^{-3}$ neutron alignment in $^{91}$Ru

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