Levels in Zr90: Theoretical

B. F. Bayman, A. S. Reiner, R. K. Sheline

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

An attempt is made to describe the seven levels of Zr90 below 3.6 Mev in terms of the proton configurations (2p12)2, (2p121g92), and (1g92)2. The level positions and the compositions of the two 0+ states are determined for Gaussian and Yukawa forces of various ranges and exchange characters. The experimental data are well reproduced for a reasonable choice of the force parameters, the best fit being obtained with a Serber exchange mixture and a range of about 1.5 fermis. The experimental values of the half-lives of the excited states can also be reconciled with these simple configurational assignments. The most serious discrepancy is in the half-life of the first excited (0+) state, which we calculate to be 1.35×10-8 sec, as compared to the observed value of (6.0±1.5)×10-8 sec. The remaining discrepancies in the energies and half-lives are in the direction of the effects produced by a slight deformation of the Sr88 core.

Original languageEnglish (US)
Pages (from-to)1627-1635
Number of pages9
JournalPhysical Review
Volume115
Issue number6
DOIs
StatePublished - Dec 1 1959

Fingerprint

half life
excitation
protons
configurations
energy

Cite this

Bayman, B. F., Reiner, A. S., & Sheline, R. K. (1959). Levels in Zr90: Theoretical. Physical Review, 115(6), 1627-1635. https://doi.org/10.1103/PhysRev.115.1627

Levels in Zr90 : Theoretical. / Bayman, B. F.; Reiner, A. S.; Sheline, R. K.

In: Physical Review, Vol. 115, No. 6, 01.12.1959, p. 1627-1635.

Research output: Contribution to journalArticle

Bayman, BF, Reiner, AS & Sheline, RK 1959, 'Levels in Zr90: Theoretical', Physical Review, vol. 115, no. 6, pp. 1627-1635. https://doi.org/10.1103/PhysRev.115.1627
Bayman, B. F. ; Reiner, A. S. ; Sheline, R. K. / Levels in Zr90 : Theoretical. In: Physical Review. 1959 ; Vol. 115, No. 6. pp. 1627-1635.
@article{c4b268a7cf4346d19c3a67f128f6ccdb,
title = "Levels in Zr90: Theoretical",
abstract = "An attempt is made to describe the seven levels of Zr90 below 3.6 Mev in terms of the proton configurations (2p12)2, (2p121g92), and (1g92)2. The level positions and the compositions of the two 0+ states are determined for Gaussian and Yukawa forces of various ranges and exchange characters. The experimental data are well reproduced for a reasonable choice of the force parameters, the best fit being obtained with a Serber exchange mixture and a range of about 1.5 fermis. The experimental values of the half-lives of the excited states can also be reconciled with these simple configurational assignments. The most serious discrepancy is in the half-life of the first excited (0+) state, which we calculate to be 1.35×10-8 sec, as compared to the observed value of (6.0±1.5)×10-8 sec. The remaining discrepancies in the energies and half-lives are in the direction of the effects produced by a slight deformation of the Sr88 core.",
author = "Bayman, {B. F.} and Reiner, {A. S.} and Sheline, {R. K.}",
year = "1959",
month = "12",
day = "1",
doi = "10.1103/PhysRev.115.1627",
language = "English (US)",
volume = "115",
pages = "1627--1635",
journal = "Physical Review",
issn = "0031-899X",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - Levels in Zr90

T2 - Theoretical

AU - Bayman, B. F.

AU - Reiner, A. S.

AU - Sheline, R. K.

PY - 1959/12/1

Y1 - 1959/12/1

N2 - An attempt is made to describe the seven levels of Zr90 below 3.6 Mev in terms of the proton configurations (2p12)2, (2p121g92), and (1g92)2. The level positions and the compositions of the two 0+ states are determined for Gaussian and Yukawa forces of various ranges and exchange characters. The experimental data are well reproduced for a reasonable choice of the force parameters, the best fit being obtained with a Serber exchange mixture and a range of about 1.5 fermis. The experimental values of the half-lives of the excited states can also be reconciled with these simple configurational assignments. The most serious discrepancy is in the half-life of the first excited (0+) state, which we calculate to be 1.35×10-8 sec, as compared to the observed value of (6.0±1.5)×10-8 sec. The remaining discrepancies in the energies and half-lives are in the direction of the effects produced by a slight deformation of the Sr88 core.

AB - An attempt is made to describe the seven levels of Zr90 below 3.6 Mev in terms of the proton configurations (2p12)2, (2p121g92), and (1g92)2. The level positions and the compositions of the two 0+ states are determined for Gaussian and Yukawa forces of various ranges and exchange characters. The experimental data are well reproduced for a reasonable choice of the force parameters, the best fit being obtained with a Serber exchange mixture and a range of about 1.5 fermis. The experimental values of the half-lives of the excited states can also be reconciled with these simple configurational assignments. The most serious discrepancy is in the half-life of the first excited (0+) state, which we calculate to be 1.35×10-8 sec, as compared to the observed value of (6.0±1.5)×10-8 sec. The remaining discrepancies in the energies and half-lives are in the direction of the effects produced by a slight deformation of the Sr88 core.

UR - http://www.scopus.com/inward/record.url?scp=0001618051&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001618051&partnerID=8YFLogxK

U2 - 10.1103/PhysRev.115.1627

DO - 10.1103/PhysRev.115.1627

M3 - Article

AN - SCOPUS:0001618051

VL - 115

SP - 1627

EP - 1635

JO - Physical Review

JF - Physical Review

SN - 0031-899X

IS - 6

ER -