Prompt and delayed $\gamma$ spectroscopy of neutron-rich $^{94}$Kr and observation of a new isomer

R.-B Gerst; A Blazhev; N Warr; J Wilson; M Lebois; N Jovančević; D Thisse; R Canavan; Matthias Rudigier; D Étasse; E Adamska; P Adsley; A Algora; M Babo; K Belvedere; J Benito; G Benzoni; A Boso; S Bottoni; N Cieplicka-Oryńczak; M Bunce; R Chakma; S Courtin; M Cortés; P Davies; C Delafosse; M Fallot; B Fornal; L Fraile; D Gjestvang; A Gottardo; V Guadilla; G Häfner; K Hauschild; M Heine; C Henrich; I Homm; F Ibrahim; S Jazrawi; A Korgul; Ł Iskra; P Ivanov; P Koseoglou; T Kröll; T Kurtukian-Nieto; L Le Meur; S Leoni; J Ljungvall; A Lopez-Martens; R Lozeva; I Matea; K Miernik; J Nemer; S Oberstedt; W Paulsen; M Piersa; Y Popovitch; C Porzio; L Qi; D Ralet; P Regan; D Reygadas-Tello; K Rezynkina; V Sánchez-Tembleque; C Schmitt; P.-A Söderström; C Sürder; G Tocabens; V Vedia; D Verney; B Wasilewska; J Wiederhold; M Yavachova; F Zeiser; S Ziliani

doi:10.1103/PhysRevC.102.064323

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$Prompt and delayed $\gamma$ spectroscopy of neutron-rich $^{94}$Kr and observation of a new isomer$

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Prompt and delayed $\gamma$ spectroscopy of neutron-rich $^{94}$Kr and observation of a new isomer

R.-B Gerst, A Blazhev, N Warr, J Wilson, M Lebois, N Jovančević, D Thisse, R Canavan, Matthias Rudigier, D Étasse, …

Physical review. C, Nuclear physics, Vol.102(6), 064323

12/2020

DOI: https://doi.org/10.1103/PhysRevC.102.064323

Abstract

Nuclear Experiment

Nuclear Theory

Physics

Prompt and delayed γ-ray spectroscopy of the neutron-rich 94Kr was performed, as part of the fission campaign at the ALTO facility of the IPN Orsay, using the fast-neutron-induced fission reaction 238U(n,f) in combination with the ν-Ball array, a novel hybrid γ spectrometer for energy and lifetime measurements. Several new yrast and nonyrast transitions were observed for the first time, extending the previously known level scheme. Additionally, we report on the observation of a new short-lived isomer at 3444 keV with a half-life of 32(3) ns. The analysis of the Nilsson orbitals obtained from Gogny cranked Hartree-Fock-Bogoliubov calculations suggests a (9−) spin and an oblate deformation for this isomer corresponding to a two-quasineutron state, indicating an isomeric structure very similar to that of the neighboring isotones 96Sr and 92Se

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Title: Prompt and delayed $\gamma$ spectroscopy of neutron-rich $^{94}$Kr and observation of a new isomer
Creators: R.-B Gerst
A Blazhev
N Warr
J Wilson - University of Surrey, School of Biosciences
M Lebois - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
N Jovančević - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
D Thisse - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
R Canavan - University of Surrey, School of Maths and Physics
Matthias Rudigier - University of Surrey
D Étasse - Laboratoire de physique corpusculaire de Caen
E Adamska
P Adsley - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
A Algora
M Babo - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
K Belvedere - University of Surrey, School of Maths and Physics
J Benito
G Benzoni
A Boso
S Bottoni
N Cieplicka-Oryńczak
M Bunce
R Chakma - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
S Courtin - Institut Pluridisciplinaire Hubert Curien
M Cortés
P Davies
C Delafosse - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
M Fallot - Laboratoire de physique subatomique et des technologies associées
B Fornal
L Fraile
D Gjestvang
A Gottardo
V Guadilla - Laboratoire de physique subatomique et des technologies associées
G Häfner - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
K Hauschild - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
M Heine - Institut Pluridisciplinaire Hubert Curien
C Henrich
I Homm
F Ibrahim
S Jazrawi - University of Surrey, School of Maths and Physics
A Korgul
Ł Iskra
P Ivanov
P Koseoglou
T Kröll
T Kurtukian-Nieto - Centre d'Etudes Nucléaires de Bordeaux Gradignan
L Le Meur - Laboratoire de physique subatomique et des technologies associées
S Leoni
J Ljungvall - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
A Lopez-Martens - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
R Lozeva - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
I Matea - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
K Miernik
J Nemer - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
S Oberstedt
W Paulsen
M Piersa
Y Popovitch - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
C Porzio
L Qi - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
D Ralet - Grand Accélérateur National d'Ions Lourds
P Regan - University of Surrey, School of Maths and Physics
D Reygadas-Tello
K Rezynkina
V Sánchez-Tembleque
C Schmitt - Institut Pluridisciplinaire Hubert Curien
P.-A Söderström
C Sürder
G Tocabens - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
V Vedia
D Verney - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
B Wasilewska
J Wiederhold
M Yavachova
F Zeiser
S Ziliani
Publication Details: Physical review. C, Nuclear physics, Vol.102(6), 064323
Publisher: American Physical Society
Date published: 12/2020
Date accepted: 12/11/2020
Identifiers: 99537122702346
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

Prompt and delayed $\gamma$ spectroscopy of neutron-rich $^{94}$Kr and observation of a new isomer

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