First observation of rotational bands in the nucleus 231U

D. G. Roux; R. A. Bark; E. A. Lawrie; J. J. Lawrie; S. S. Ntshangase; T. S. Dinoko; J. L. Easton; P. Jones; B. V. Kheswa; N. A. Khumalo; S. N.T. Majola; L. P. Masiteng; D. Negi; S. P. Noncolela; J. Ndayishimye; J. F. Sharpey-Schafer; O. Shirinda; P. C. Uwitonze

doi:10.1140/epja/s10050-024-01337-z

First observation of rotational bands in the nucleus 231U

D. G. Roux, R. A. Bark, E. A. Lawrie, J. J. Lawrie, S. S. Ntshangase, T. S. Dinoko, J. L. Easton, P. Jones, B. V. Kheswa, N. A. Khumalo, S. N.T. Majola, L. P. Masiteng, D. Negi, S. P. Noncolela, J. Ndayishimye, J. F. Sharpey-Schafer, O. Shirinda, P. C. Uwitonze

Physics

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Abstract

This work reports the first rotational bands observed in the neutron-deficient nucleus ²³¹U. Excited states were populated in the ²³²Th(α,5n) reaction at a beam energy of 52 MeV. Coincident decay γ-rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band ν[633]5/2⁺, yrast band ν[752]5/2^-, and an excited band ν[631]3/2⁺. Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the ν[752]5/2^- bandhead is suggested to be 113.0 keV.

Original language	English
Article number	118
Journal	European Physical Journal A
Volume	60
Issue number	5
DOIs	https://doi.org/10.1140/epja/s10050-024-01337-z
Publication status	Published - May 2024

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1140/epja/s10050-024-01337-z

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Roux, D. G., Bark, R. A., Lawrie, E. A., Lawrie, J. J., Ntshangase, S. S., Dinoko, T. S., Easton, J. L., Jones, P., Kheswa, B. V., Khumalo, N. A., Majola, S. N. T., Masiteng, L. P., Negi, D., Noncolela, S. P., Ndayishimye, J., Sharpey-Schafer, J. F., Shirinda, O., & Uwitonze, P. C. (2024). First observation of rotational bands in the nucleus 231U. European Physical Journal A, 60(5), Article 118. https://doi.org/10.1140/epja/s10050-024-01337-z

@article{5915a6ab4cd942bab02994a5207d1d8f,

title = "First observation of rotational bands in the nucleus 231U",

abstract = "This work reports the first rotational bands observed in the neutron-deficient nucleus 231U. Excited states were populated in the 232Th(α,5n) reaction at a beam energy of 52 MeV. Coincident decay γ-rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band ν[633]5/2+, yrast band ν[752]5/2-, and an excited band ν[631]3/2+. Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the ν[752]5/2- bandhead is suggested to be 113.0 keV.",

author = "Roux, {D. G.} and Bark, {R. A.} and Lawrie, {E. A.} and Lawrie, {J. J.} and Ntshangase, {S. S.} and Dinoko, {T. S.} and Easton, {J. L.} and P. Jones and Kheswa, {B. V.} and Khumalo, {N. A.} and Majola, {S. N.T.} and Masiteng, {L. P.} and D. Negi and Noncolela, {S. P.} and J. Ndayishimye and Sharpey-Schafer, {J. F.} and O. Shirinda and Uwitonze, {P. C.}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = may,

doi = "10.1140/epja/s10050-024-01337-z",

language = "English",

volume = "60",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "5",

}

Roux, DG, Bark, RA, Lawrie, EA, Lawrie, JJ, Ntshangase, SS, Dinoko, TS, Easton, JL, Jones, P, Kheswa, BV, Khumalo, NA, Majola, SNT, Masiteng, LP, Negi, D, Noncolela, SP, Ndayishimye, J, Sharpey-Schafer, JF, Shirinda, O & Uwitonze, PC 2024, 'First observation of rotational bands in the nucleus 231U', European Physical Journal A, vol. 60, no. 5, 118. https://doi.org/10.1140/epja/s10050-024-01337-z

TY - JOUR

T1 - First observation of rotational bands in the nucleus 231U

AU - Roux, D. G.

AU - Bark, R. A.

AU - Lawrie, E. A.

AU - Lawrie, J. J.

AU - Ntshangase, S. S.

AU - Dinoko, T. S.

AU - Easton, J. L.

AU - Jones, P.

AU - Kheswa, B. V.

AU - Khumalo, N. A.

AU - Majola, S. N.T.

AU - Masiteng, L. P.

AU - Negi, D.

AU - Noncolela, S. P.

AU - Ndayishimye, J.

AU - Sharpey-Schafer, J. F.

AU - Shirinda, O.

AU - Uwitonze, P. C.

PY - 2024/5

Y1 - 2024/5

N2 - This work reports the first rotational bands observed in the neutron-deficient nucleus 231U. Excited states were populated in the 232Th(α,5n) reaction at a beam energy of 52 MeV. Coincident decay γ-rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band ν[633]5/2+, yrast band ν[752]5/2-, and an excited band ν[631]3/2+. Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the ν[752]5/2- bandhead is suggested to be 113.0 keV.

AB - This work reports the first rotational bands observed in the neutron-deficient nucleus 231U. Excited states were populated in the 232Th(α,5n) reaction at a beam energy of 52 MeV. Coincident decay γ-rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band ν[633]5/2+, yrast band ν[752]5/2-, and an excited band ν[631]3/2+. Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the ν[752]5/2- bandhead is suggested to be 113.0 keV.

UR - http://www.scopus.com/inward/record.url?scp=85195149627&partnerID=8YFLogxK

U2 - 10.1140/epja/s10050-024-01337-z

DO - 10.1140/epja/s10050-024-01337-z

M3 - Article

AN - SCOPUS:85195149627

SN - 1434-6001

VL - 60

JO - European Physical Journal A

JF - European Physical Journal A

IS - 5

M1 - 118

ER -

First observation of rotational bands in the nucleus 231U

Abstract

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