Level structure of Nb-99

G Lhersonneau; J Suhonen; P Dendooven; A Honkanen; M Huhta; P Jones; R Julin; S Juutinen; M Oinonen; H Penttila; B.L. Persson; K Perajarvi; A Savelius; J.C. Wang; J Aysto; S Brant; N. Paar; D Vretenar

doi:10.1103/PhysRevC.57.2974

Level structure of Nb-99

G Lhersonneau^*
, J Suhonen
, P Dendooven
, A Honkanen
, M Huhta
, P Jones
, R Julin
, S Juutinen
, M Oinonen
, H Penttila
, B.L. Persson
, K Perajarvi
, A Savelius
, J.C. Wang
, J Aysto
, S Brant
, N. Paar
, D Vretenar

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

19 Citations (Scopus)

Abstract

The beta decay of Sr-97 to Y-97 has been investigated using ion-guide on-line mass separation and a 10 Ge-detector array to record gamma-gamma coincidences to a detection limit well below that of former studies. Similarities are found in the P-decay patterns of Zr-99 and of its isotone Sr-97 and also in the gamma-ray decay rates and branchings of the corresponding levels in their respective daughters Nb-99 and Y-97. This indicates a persisting influence of the d(5/2) neutron shell closure for Nb-99. The level structure of Nb-99 and the P-feeding pattern are discussed in the frame of the interacting boson-fermion plus broken pair model and the microscopic quasiparticle phonon model.

Original language	English
Pages (from-to)	2974-2990
Number of pages	17
Journal	Physical Review C
Volume	57
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.57.2974
Publication status	Published - Jun-1998
Externally published	Yes

Keywords

INTERACTING BOSON MODEL
COLLECTIVE NUCLEAR-STATES
NEUTRON-RICH NUCLEI
ODD-ODD NUCLEI
SU(3) LIMIT
HIGH-SPIN
LIFETIME MEASUREMENTS
ROTATIONAL STRUCTURE
SHAPE COEXISTENCE
FERMION MODEL

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title = "Level structure of Nb-99",

abstract = "The beta decay of Sr-97 to Y-97 has been investigated using ion-guide on-line mass separation and a 10 Ge-detector array to record gamma-gamma coincidences to a detection limit well below that of former studies. Similarities are found in the P-decay patterns of Zr-99 and of its isotone Sr-97 and also in the gamma-ray decay rates and branchings of the corresponding levels in their respective daughters Nb-99 and Y-97. This indicates a persisting influence of the d(5/2) neutron shell closure for Nb-99. The level structure of Nb-99 and the P-feeding pattern are discussed in the frame of the interacting boson-fermion plus broken pair model and the microscopic quasiparticle phonon model.",

keywords = "INTERACTING BOSON MODEL, COLLECTIVE NUCLEAR-STATES, NEUTRON-RICH NUCLEI, ODD-ODD NUCLEI, SU(3) LIMIT, HIGH-SPIN, LIFETIME MEASUREMENTS, ROTATIONAL STRUCTURE, SHAPE COEXISTENCE, FERMION MODEL",

author = "G Lhersonneau and J Suhonen and P Dendooven and A Honkanen and M Huhta and P Jones and R Julin and S Juutinen and M Oinonen and H Penttila and B.L. Persson and K Perajarvi and A Savelius and J.C. Wang and J Aysto and S Brant and N. Paar and D Vretenar",

year = "1998",

month = jun,

doi = "10.1103/PhysRevC.57.2974",

language = "English",

volume = "57",

pages = "2974--2990",

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T1 - Level structure of Nb-99

AU - Lhersonneau, G

AU - Suhonen, J

AU - Dendooven, P

AU - Honkanen, A

AU - Huhta, M

AU - Jones, P

AU - Julin, R

AU - Juutinen, S

AU - Oinonen, M

AU - Penttila, H

AU - Persson, B.L.

AU - Perajarvi, K

AU - Savelius, A

AU - Wang, J.C.

AU - Aysto, J

AU - Brant, S

AU - Paar, N.

AU - Vretenar, D

PY - 1998/6

Y1 - 1998/6

N2 - The beta decay of Sr-97 to Y-97 has been investigated using ion-guide on-line mass separation and a 10 Ge-detector array to record gamma-gamma coincidences to a detection limit well below that of former studies. Similarities are found in the P-decay patterns of Zr-99 and of its isotone Sr-97 and also in the gamma-ray decay rates and branchings of the corresponding levels in their respective daughters Nb-99 and Y-97. This indicates a persisting influence of the d(5/2) neutron shell closure for Nb-99. The level structure of Nb-99 and the P-feeding pattern are discussed in the frame of the interacting boson-fermion plus broken pair model and the microscopic quasiparticle phonon model.

AB - The beta decay of Sr-97 to Y-97 has been investigated using ion-guide on-line mass separation and a 10 Ge-detector array to record gamma-gamma coincidences to a detection limit well below that of former studies. Similarities are found in the P-decay patterns of Zr-99 and of its isotone Sr-97 and also in the gamma-ray decay rates and branchings of the corresponding levels in their respective daughters Nb-99 and Y-97. This indicates a persisting influence of the d(5/2) neutron shell closure for Nb-99. The level structure of Nb-99 and the P-feeding pattern are discussed in the frame of the interacting boson-fermion plus broken pair model and the microscopic quasiparticle phonon model.

KW - INTERACTING BOSON MODEL

KW - COLLECTIVE NUCLEAR-STATES

KW - NEUTRON-RICH NUCLEI

KW - ODD-ODD NUCLEI

KW - SU(3) LIMIT

KW - HIGH-SPIN

KW - LIFETIME MEASUREMENTS

KW - ROTATIONAL STRUCTURE

KW - SHAPE COEXISTENCE

KW - FERMION MODEL

U2 - 10.1103/PhysRevC.57.2974

DO - 10.1103/PhysRevC.57.2974

M3 - Article

SN - 0556-2813

VL - 57

SP - 2974

EP - 2990

JO - Physical Review C

JF - Physical Review C

IS - 6

ER -

Level structure of Nb-99

Abstract

Keywords

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