Nuclear structure of Te-130 from inelastic neutron scattering and shell model analysis

Ben Coombes; S. F. Hicks; T. H. Churchill; D.  Bandyopadhyay; B. R. Champine; Andrew Stuchbery; C. M. Davoren; J.C. Ellis; W. M. Faulkner; S. R. Lesher; J. M. Mueller; S. Mukhopadhyay

doi:10.1103/PhysRevC.105.024329

Nuclear structure of Te-130 from inelastic neutron scattering and shell model analysis

Ben Coombes, S. F. Hicks, T. H. Churchill, D. Bandyopadhyay, B. R. Champine, Andrew Stuchbery, C. M. Davoren, J.C. Ellis, W. M. Faulkner, S. R. Lesher, J. M. Mueller, S. Mukhopadhyay

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Abstract

Excited levels of Te-130 were studied with the (n, n'gamma) reaction. Excitation functions, gamma gamma coincidences, angular distributions, and Doppler shifts were measured for gamma rays from levels up to an excitation energy of 3.3 MeV. Detailed information that includes level lifetimes, multipole-mixing ratios, branching ratios, and electromagnetic transition rates deduced from these measurements is presented. Large-scale shell model calculations performed with all proton and neutron orbitals in the 50-82 shell are compared to these data, with generally good agreement, particularly for the positive-parity states. To investigate emerging collectivity in Te-130, the Kumar-Cline sum rules were used to evaluate rotational invariants from the shell model calculations. Whereas the ground state and first-excited state show the greatest average deformation, as expected, all of the low-lying states are weakly deformed and triaxial.

Original language	English
Journal	Physical Review C
Volume	105
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.105.024329
Publication status	Published - 2022

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@article{18dfac90fad34d688ced7901435c1e81,

title = "Nuclear structure of Te-130 from inelastic neutron scattering and shell model analysis",

abstract = "Excited levels of Te-130 were studied with the (n, n'gamma) reaction. Excitation functions, gamma gamma coincidences, angular distributions, and Doppler shifts were measured for gamma rays from levels up to an excitation energy of 3.3 MeV. Detailed information that includes level lifetimes, multipole-mixing ratios, branching ratios, and electromagnetic transition rates deduced from these measurements is presented. Large-scale shell model calculations performed with all proton and neutron orbitals in the 50-82 shell are compared to these data, with generally good agreement, particularly for the positive-parity states. To investigate emerging collectivity in Te-130, the Kumar-Cline sum rules were used to evaluate rotational invariants from the shell model calculations. Whereas the ground state and first-excited state show the greatest average deformation, as expected, all of the low-lying states are weakly deformed and triaxial.",

author = "Ben Coombes and Hicks, {S. F.} and Churchill, {T. H.} and D. Bandyopadhyay and Champine, {B. R.} and Andrew Stuchbery and Davoren, {C. M.} and J.C. Ellis and Faulkner, {W. M.} and Lesher, {S. R.} and Mueller, {J. M.} and S. Mukhopadhyay",

year = "2022",

doi = "10.1103/PhysRevC.105.024329",

language = "English",

volume = "105",

journal = "Physical Review C",

publisher = "American Physical Society",

number = "2",

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TY - JOUR

T1 - Nuclear structure of Te-130 from inelastic neutron scattering and shell model analysis

AU - Coombes, Ben

AU - Hicks, S. F.

AU - Churchill, T. H.

AU - Bandyopadhyay, D.

AU - Champine, B. R.

AU - Stuchbery, Andrew

AU - Davoren, C. M.

AU - Ellis, J.C.

AU - Faulkner, W. M.

AU - Lesher, S. R.

AU - Mueller, J. M.

AU - Mukhopadhyay, S.

PY - 2022

Y1 - 2022

N2 - Excited levels of Te-130 were studied with the (n, n'gamma) reaction. Excitation functions, gamma gamma coincidences, angular distributions, and Doppler shifts were measured for gamma rays from levels up to an excitation energy of 3.3 MeV. Detailed information that includes level lifetimes, multipole-mixing ratios, branching ratios, and electromagnetic transition rates deduced from these measurements is presented. Large-scale shell model calculations performed with all proton and neutron orbitals in the 50-82 shell are compared to these data, with generally good agreement, particularly for the positive-parity states. To investigate emerging collectivity in Te-130, the Kumar-Cline sum rules were used to evaluate rotational invariants from the shell model calculations. Whereas the ground state and first-excited state show the greatest average deformation, as expected, all of the low-lying states are weakly deformed and triaxial.

AB - Excited levels of Te-130 were studied with the (n, n'gamma) reaction. Excitation functions, gamma gamma coincidences, angular distributions, and Doppler shifts were measured for gamma rays from levels up to an excitation energy of 3.3 MeV. Detailed information that includes level lifetimes, multipole-mixing ratios, branching ratios, and electromagnetic transition rates deduced from these measurements is presented. Large-scale shell model calculations performed with all proton and neutron orbitals in the 50-82 shell are compared to these data, with generally good agreement, particularly for the positive-parity states. To investigate emerging collectivity in Te-130, the Kumar-Cline sum rules were used to evaluate rotational invariants from the shell model calculations. Whereas the ground state and first-excited state show the greatest average deformation, as expected, all of the low-lying states are weakly deformed and triaxial.

U2 - 10.1103/PhysRevC.105.024329

DO - 10.1103/PhysRevC.105.024329

M3 - Article

VL - 105

JO - Physical Review C

JF - Physical Review C

IS - 2

ER -

Nuclear structure of Te-130 from inelastic neutron scattering and shell model analysis

Abstract

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