Detailed spectroscopy of 46Ca: A study of the β- decay of 46K

J. L. Pore; C. Andreoiu; J. K. Smith; A. D. MacLean; A. Chester; J. D. Holt; G. C. Ball; P. C. Bender; V. Bildstein; R. Braid; A. Diaz Varela; R. Dunlop; L. J. Evitts; A. B. Garnsworthy; P. E. Garrett; G. Hackman; S. V. Ilyushkin; B. Jigmeddorj; K. Kuhn; P. Kunz; A. T. Laffoley; K. G. Leach; D. Miller; W. J. Mills; W. Moore; M. Moukaddam; L. N. Morrison; B. Olaizola; E. E. Peters; A. J. Radich; E. T. Rand; F. Sarazin; D. Southall; C. E. Svensson; S. J. Williams; S. W. Yates

doi:10.1103/PhysRevC.100.054327

Detailed spectroscopy of ⁴⁶Ca: A study of the β^- decay of ⁴⁶K

J. L. Pore
, C. Andreoiu
, J. K. Smith
, A. D. MacLean
, A. Chester
, J. D. Holt
, G. C. Ball
, P. C. Bender
, V. Bildstein
, R. Braid
, A. Diaz Varela
, R. Dunlop
, L. J. Evitts
, A. B. Garnsworthy
, P. E. Garrett
, G. Hackman
, S. V. Ilyushkin
, B. Jigmeddorj
, K. Kuhn
, P. Kunz

A. T. Laffoley, K. G. Leach, D. Miller, W. J. Mills, W. Moore, M. Moukaddam, L. N. Morrison, B. Olaizola, E. E. Peters, A. J. Radich, E. T. Rand, F. Sarazin, D. Southall, C. E. Svensson, S. J. Williams, S. W. Yates

School of Computer Science & Engineering

Simon Fraser University
TRIUMF
University of Guelph, Ontario
Colorado School of Mines
University of Surrey
University of Kentucky
Michigan State University

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

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Abstract

We report on high-statistics data from the β^- decay of the ⁴⁶K J^π= 2^- ground state taken with the GRIFFIN spectrometer located at the TRIUMF-ISAC facility. In total, 199 γ rays and 42 excited states were placed in the level scheme, and from the observed β feeding and angular correlations of pairs of cascading γ rays, it was possible to assign spins and parities to excited states and determine mixing ratios for selected γ rays. The level structure of ⁴⁶Ca is compared to theoretical predictions from a microscopic valence-space Hamiltonian derived from two- and three-nucleon forces. These calculations are in reasonable agreement with the experimental data and indicate that the protons in this region are not as inert as would be expected for semimagic nuclei.

Original language	English
Journal	Physical Review C
Volume	100
Issue number	054327
DOIs	https://doi.org/10.1103/PhysRevC.100.054327
Publication status	Published - 25 Nov 2019

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2019 Detailed spectroscopy of 46CaAccepted author manuscript, 2.1 MB

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Pore, J. L., Andreoiu, C., Smith, J. K., MacLean, A. D., Chester, A., Holt, J. D., Ball, G. C., Bender, P. C., Bildstein, V., Braid, R., Diaz Varela, A., Dunlop, R., Evitts, L. J., Garnsworthy, A. B., Garrett, P. E., Hackman, G., Ilyushkin, S. V., Jigmeddorj, B., Kuhn, K., ... Yates, S. W. (2019). Detailed spectroscopy of ⁴⁶Ca: A study of the β^- decay of ⁴⁶K. Physical Review C, 100(054327). https://doi.org/10.1103/PhysRevC.100.054327

@article{29699445e09741338a8b951f812535fe,

title = "Detailed spectroscopy of 46Ca: A study of the β- decay of 46K",

abstract = "We report on high-statistics data from the β- decay of the 46K Jπ = 2- ground state taken with the GRIFFIN spectrometer located at the TRIUMF-ISAC facility. In total, 199 γ rays and 42 excited states were placed in the level scheme, and from the observed β feeding and angular correlations of pairs of cascading γ rays, it was possible to assign spins and parities to excited states and determine mixing ratios for selected γ rays. The level structure of 46Ca is compared to theoretical predictions from a microscopic valence-space Hamiltonian derived from two- and three-nucleon forces. These calculations are in reasonable agreement with the experimental data and indicate that the protons in this region are not as inert as would be expected for semimagic nuclei.",

author = "Pore, \{J. L.\} and C. Andreoiu and Smith, \{J. K.\} and MacLean, \{A. D.\} and A. Chester and Holt, \{J. D.\} and Ball, \{G. C.\} and Bender, \{P. C.\} and V. Bildstein and R. Braid and \{Diaz Varela\}, A. and R. Dunlop and Evitts, \{L. J.\} and Garnsworthy, \{A. B.\} and Garrett, \{P. E.\} and G. Hackman and Ilyushkin, \{S. V.\} and B. Jigmeddorj and K. Kuhn and P. Kunz and Laffoley, \{A. T.\} and Leach, \{K. G.\} and D. Miller and Mills, \{W. J.\} and W. Moore and M. Moukaddam and Morrison, \{L. N.\} and B. Olaizola and Peters, \{E. E.\} and Radich, \{A. J.\} and Rand, \{E. T.\} and F. Sarazin and D. Southall and Svensson, \{C. E.\} and Williams, \{S. J.\} and Yates, \{S. W.\}",

year = "2019",

month = nov,

day = "25",

doi = "10.1103/PhysRevC.100.054327",

language = "English",

volume = "100",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "054327",

}

Pore, JL, Andreoiu, C, Smith, JK, MacLean, AD, Chester, A, Holt, JD, Ball, GC, Bender, PC, Bildstein, V, Braid, R, Diaz Varela, A, Dunlop, R, Evitts, LJ, Garnsworthy, AB, Garrett, PE, Hackman, G, Ilyushkin, SV, Jigmeddorj, B, Kuhn, K, Kunz, P, Laffoley, AT, Leach, KG, Miller, D, Mills, WJ, Moore, W, Moukaddam, M, Morrison, LN, Olaizola, B, Peters, EE, Radich, AJ, Rand, ET, Sarazin, F, Southall, D, Svensson, CE, Williams, SJ & Yates, SW 2019, 'Detailed spectroscopy of ⁴⁶Ca: A study of the β^- decay of ⁴⁶K', Physical Review C, vol. 100, no. 054327. https://doi.org/10.1103/PhysRevC.100.054327

TY - JOUR

T1 - Detailed spectroscopy of 46Ca: A study of the β- decay of 46K

AU - Pore, J. L.

AU - Andreoiu, C.

AU - Smith, J. K.

AU - MacLean, A. D.

AU - Chester, A.

AU - Holt, J. D.

AU - Ball, G. C.

AU - Bender, P. C.

AU - Bildstein, V.

AU - Braid, R.

AU - Diaz Varela, A.

AU - Dunlop, R.

AU - Evitts, L. J.

AU - Garnsworthy, A. B.

AU - Garrett, P. E.

AU - Hackman, G.

AU - Ilyushkin, S. V.

AU - Jigmeddorj, B.

AU - Kuhn, K.

AU - Kunz, P.

AU - Laffoley, A. T.

AU - Leach, K. G.

AU - Miller, D.

AU - Mills, W. J.

AU - Moore, W.

AU - Moukaddam, M.

AU - Morrison, L. N.

AU - Olaizola, B.

AU - Peters, E. E.

AU - Radich, A. J.

AU - Rand, E. T.

AU - Sarazin, F.

AU - Southall, D.

AU - Svensson, C. E.

AU - Williams, S. J.

AU - Yates, S. W.

PY - 2019/11/25

Y1 - 2019/11/25

N2 - We report on high-statistics data from the β- decay of the 46K Jπ = 2- ground state taken with the GRIFFIN spectrometer located at the TRIUMF-ISAC facility. In total, 199 γ rays and 42 excited states were placed in the level scheme, and from the observed β feeding and angular correlations of pairs of cascading γ rays, it was possible to assign spins and parities to excited states and determine mixing ratios for selected γ rays. The level structure of 46Ca is compared to theoretical predictions from a microscopic valence-space Hamiltonian derived from two- and three-nucleon forces. These calculations are in reasonable agreement with the experimental data and indicate that the protons in this region are not as inert as would be expected for semimagic nuclei.

AB - We report on high-statistics data from the β- decay of the 46K Jπ = 2- ground state taken with the GRIFFIN spectrometer located at the TRIUMF-ISAC facility. In total, 199 γ rays and 42 excited states were placed in the level scheme, and from the observed β feeding and angular correlations of pairs of cascading γ rays, it was possible to assign spins and parities to excited states and determine mixing ratios for selected γ rays. The level structure of 46Ca is compared to theoretical predictions from a microscopic valence-space Hamiltonian derived from two- and three-nucleon forces. These calculations are in reasonable agreement with the experimental data and indicate that the protons in this region are not as inert as would be expected for semimagic nuclei.

UR - https://arxiv.org/pdf/1912.02407.pdf

U2 - 10.1103/PhysRevC.100.054327

DO - 10.1103/PhysRevC.100.054327

M3 - Article

SN - 2469-9985

VL - 100

JO - Physical Review C

JF - Physical Review C

IS - 054327

ER -

Detailed spectroscopy of ⁴⁶Ca: A study of the β^- decay of ⁴⁶K

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