Isospin purity of T=1 states in the A=38 nuclei studied via lifetime measurements in K-38

F. M. Prados Estevez; A. M. Bruce; M. J. Taylor; H. Amro; C. W. Beausang; R. F. Casten; J. J. Ressler; C. J. Barton; C. Chandler; G. Hammond

doi:10.1103/PhysRevC.75.014309

Isospin purity of T=1 states in the A=38 nuclei studied via lifetime measurements in K-38

F. M. Prados Estevez, A. M. Bruce, M. J. Taylor, H. Amro, C. W. Beausang, R. F. Casten, J. J. Ressler, C. J. Barton, C. Chandler, G. Hammond

Physics

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

Abstract

The Doppler Shift Attenuation Method was used to measure lifetimes for levels in K-38 at excitation energies of 1698, 2404, 2830, 2996, and 3671 keV, populated using the Ca-40(d, alpha)K-38 reaction at a beam energy of 4.5 MeV. Values of 109(29), 95(22), 457(63), 130(40), and 160(50) fs, respectively, were measured and are compared with previous values obtained using different stopping powers. The matrix element for the transition between the J(pi)=2(T=1)(+) and 0(T=1)(+) states in this T-z=0 nucleus is compared with the analogous transition in the other nuclei in the T=1 triplet, Ca-38 (T-z=-1) and Ar-38 (T-z=+1), and with the results of shell-model calculations.

Original language	English
Article number	014309
Pages (from-to)	-
Number of pages	6
Journal	Physical Review C
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.75.014309
Publication status	Published - Jan 2007

Keywords

SHELL-MODEL

Access to Document

10.1103/PhysRevC.75.014309

Cite this

@article{23427f876f9a4b1082514ce50767b60d,

title = "Isospin purity of T=1 states in the A=38 nuclei studied via lifetime measurements in K-38",

abstract = "The Doppler Shift Attenuation Method was used to measure lifetimes for levels in K-38 at excitation energies of 1698, 2404, 2830, 2996, and 3671 keV, populated using the Ca-40(d, alpha)K-38 reaction at a beam energy of 4.5 MeV. Values of 109(29), 95(22), 457(63), 130(40), and 160(50) fs, respectively, were measured and are compared with previous values obtained using different stopping powers. The matrix element for the transition between the J(pi)=2(T=1)(+) and 0(T=1)(+) states in this T-z=0 nucleus is compared with the analogous transition in the other nuclei in the T=1 triplet, Ca-38 (T-z=-1) and Ar-38 (T-z=+1), and with the results of shell-model calculations.",

keywords = "SHELL-MODEL",

author = "{M. Prados Estevez}, F. and Bruce, {A. M.} and Taylor, {M. J.} and H. Amro and Beausang, {C. W.} and Casten, {R. F.} and Ressler, {J. J.} and Barton, {C. J.} and C. Chandler and G. Hammond",

year = "2007",

month = jan,

doi = "10.1103/PhysRevC.75.014309",

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journal = "Physical Review C",

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T1 - Isospin purity of T=1 states in the A=38 nuclei studied via lifetime measurements in K-38

AU - M. Prados Estevez, F.

AU - Bruce, A. M.

AU - Taylor, M. J.

AU - Amro, H.

AU - Beausang, C. W.

AU - Casten, R. F.

AU - Ressler, J. J.

AU - Barton, C. J.

AU - Chandler, C.

AU - Hammond, G.

PY - 2007/1

Y1 - 2007/1

N2 - The Doppler Shift Attenuation Method was used to measure lifetimes for levels in K-38 at excitation energies of 1698, 2404, 2830, 2996, and 3671 keV, populated using the Ca-40(d, alpha)K-38 reaction at a beam energy of 4.5 MeV. Values of 109(29), 95(22), 457(63), 130(40), and 160(50) fs, respectively, were measured and are compared with previous values obtained using different stopping powers. The matrix element for the transition between the J(pi)=2(T=1)(+) and 0(T=1)(+) states in this T-z=0 nucleus is compared with the analogous transition in the other nuclei in the T=1 triplet, Ca-38 (T-z=-1) and Ar-38 (T-z=+1), and with the results of shell-model calculations.

AB - The Doppler Shift Attenuation Method was used to measure lifetimes for levels in K-38 at excitation energies of 1698, 2404, 2830, 2996, and 3671 keV, populated using the Ca-40(d, alpha)K-38 reaction at a beam energy of 4.5 MeV. Values of 109(29), 95(22), 457(63), 130(40), and 160(50) fs, respectively, were measured and are compared with previous values obtained using different stopping powers. The matrix element for the transition between the J(pi)=2(T=1)(+) and 0(T=1)(+) states in this T-z=0 nucleus is compared with the analogous transition in the other nuclei in the T=1 triplet, Ca-38 (T-z=-1) and Ar-38 (T-z=+1), and with the results of shell-model calculations.

KW - SHELL-MODEL

U2 - 10.1103/PhysRevC.75.014309

DO - 10.1103/PhysRevC.75.014309

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SP - -

JO - Physical Review C

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