Fermi superallowed β+ decays and T=1 ground states of heavy odd-odd N=Z nuclei

J. Garcés Narro; C. Longour; P. H. Regan; B. Blank; C. J. Pearson; M. Lewitowicz; C. Miehé; W. Gelletly; D. Appelbe; L. Axelsson; A. M. Bruce; W. N. Catford; C. Chandler; R. M. Clark; D. M. Cullen; S. Czajkowski; J. M. Daugas; P. Dessagne; A. Fleury; L. Frankland; J. Giovinazzo; B. Greenhalgh; R. Grzywacz; M. Harder; K. L. Jones; N. Kelsall; T. Kszczot; R. D. Page; A. T. Reed; O. Sorlin; R. Wadsworth

doi:10.1103/PhysRevC.63.044307

Fermi superallowed β⁺ decays and T=1 ground states of heavy odd-odd N=Z nuclei

J. Garcés Narro^*, C. Longour, P. H. Regan, B. Blank, C. J. Pearson, M. Lewitowicz, C. Miehé, W. Gelletly, D. Appelbe, L. Axelsson, A. M. Bruce, W. N. Catford, C. Chandler, R. M. Clark, D. M. Cullen, S. Czajkowski, J. M. Daugas, P. Dessagne, A. Fleury, L. FranklandJ. Giovinazzo, B. Greenhalgh, R. Grzywacz, M. Harder, K. L. Jones, N. Kelsall, T. Kszczot, R. D. Page, A. T. Reed, O. Sorlin, R. Wadsworth

^*Corresponding author for this work

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

Abstract

The β⁺-decay half-lives of the neutron-deficient odd-odd N=Z nuclei ⁷⁴Rb, ⁷⁸Y, ⁸²Nb, and ⁸⁶Tc have been measured following the fragmentation of a primary ⁹²Mo beam at an energy of 60 MeV per nucleon at the GANIL laboratory, France. This was achieved by correlating β⁺ decays with the implantation of unambiguously identified fragments at the final focus of the LISE3 separator. The deduced log₁₀ft_1/2 values are consistent with 0⁺→0⁺, Fermi superallowed transitions, which together with the measured β⁺-detection efficiencies, suggest T=1, I^π=0⁺ ground states for these odd-odd N=Z nuclei. These data represent the heaviest N=Z systems for which Fermi superallowed decays have been established.

Original language	English
Article number	044307
Pages (from-to)	443071-443079
Number of pages	9
Journal	Physical Review C - Nuclear Physics
Volume	63
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.63.044307
Publication status	Published - 1 Jan 2001

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Garcés Narro, J., Longour, C., Regan, P. H., Blank, B., Pearson, C. J., Lewitowicz, M., Miehé, C., Gelletly, W., Appelbe, D., Axelsson, L., Bruce, A. M., Catford, W. N., Chandler, C., Clark, R. M., Cullen, D. M., Czajkowski, S., Daugas, J. M., Dessagne, P., Fleury, A., ... Wadsworth, R. (2001). Fermi superallowed β⁺ decays and T=1 ground states of heavy odd-odd N=Z nuclei. Physical Review C - Nuclear Physics, 63(4), 443071-443079. Article 044307. https://doi.org/10.1103/PhysRevC.63.044307

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title = "Fermi superallowed β+ decays and T=1 ground states of heavy odd-odd N=Z nuclei",

abstract = "The β+-decay half-lives of the neutron-deficient odd-odd N=Z nuclei 74Rb, 78Y, 82Nb, and 86Tc have been measured following the fragmentation of a primary 92Mo beam at an energy of 60 MeV per nucleon at the GANIL laboratory, France. This was achieved by correlating β+ decays with the implantation of unambiguously identified fragments at the final focus of the LISE3 separator. The deduced log10ft1/2 values are consistent with 0+→0+, Fermi superallowed transitions, which together with the measured β+-detection efficiencies, suggest T=1, Iπ=0+ ground states for these odd-odd N=Z nuclei. These data represent the heaviest N=Z systems for which Fermi superallowed decays have been established.",

author = "{Garc{\'e}s Narro}, J. and C. Longour and Regan, {P. H.} and B. Blank and Pearson, {C. J.} and M. Lewitowicz and C. Mieh{\'e} and W. Gelletly and D. Appelbe and L. Axelsson and Bruce, {A. M.} and Catford, {W. N.} and C. Chandler and Clark, {R. M.} and Cullen, {D. M.} and S. Czajkowski and Daugas, {J. M.} and P. Dessagne and A. Fleury and L. Frankland and J. Giovinazzo and B. Greenhalgh and R. Grzywacz and M. Harder and Jones, {K. L.} and N. Kelsall and T. Kszczot and Page, {R. D.} and Reed, {A. T.} and O. Sorlin and R. Wadsworth",

year = "2001",

month = jan,

day = "1",

doi = "10.1103/PhysRevC.63.044307",

language = "English",

volume = "63",

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journal = "Physical Review C - Nuclear Physics",

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Garcés Narro, J, Longour, C, Regan, PH, Blank, B, Pearson, CJ, Lewitowicz, M, Miehé, C, Gelletly, W, Appelbe, D, Axelsson, L, Bruce, AM, Catford, WN, Chandler, C, Clark, RM, Cullen, DM, Czajkowski, S, Daugas, JM, Dessagne, P, Fleury, A, Frankland, L, Giovinazzo, J, Greenhalgh, B, Grzywacz, R, Harder, M, Jones, KL, Kelsall, N, Kszczot, T, Page, RD, Reed, AT, Sorlin, O & Wadsworth, R 2001, 'Fermi superallowed β⁺ decays and T=1 ground states of heavy odd-odd N=Z nuclei', Physical Review C - Nuclear Physics, vol. 63, no. 4, 044307, pp. 443071-443079. https://doi.org/10.1103/PhysRevC.63.044307

TY - JOUR

T1 - Fermi superallowed β+ decays and T=1 ground states of heavy odd-odd N=Z nuclei

AU - Garcés Narro, J.

AU - Longour, C.

AU - Regan, P. H.

AU - Blank, B.

AU - Pearson, C. J.

AU - Lewitowicz, M.

AU - Miehé, C.

AU - Gelletly, W.

AU - Appelbe, D.

AU - Axelsson, L.

AU - Bruce, A. M.

AU - Catford, W. N.

AU - Chandler, C.

AU - Clark, R. M.

AU - Cullen, D. M.

AU - Czajkowski, S.

AU - Daugas, J. M.

AU - Dessagne, P.

AU - Fleury, A.

AU - Frankland, L.

AU - Giovinazzo, J.

AU - Greenhalgh, B.

AU - Grzywacz, R.

AU - Harder, M.

AU - Jones, K. L.

AU - Kelsall, N.

AU - Kszczot, T.

AU - Page, R. D.

AU - Reed, A. T.

AU - Sorlin, O.

AU - Wadsworth, R.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The β+-decay half-lives of the neutron-deficient odd-odd N=Z nuclei 74Rb, 78Y, 82Nb, and 86Tc have been measured following the fragmentation of a primary 92Mo beam at an energy of 60 MeV per nucleon at the GANIL laboratory, France. This was achieved by correlating β+ decays with the implantation of unambiguously identified fragments at the final focus of the LISE3 separator. The deduced log10ft1/2 values are consistent with 0+→0+, Fermi superallowed transitions, which together with the measured β+-detection efficiencies, suggest T=1, Iπ=0+ ground states for these odd-odd N=Z nuclei. These data represent the heaviest N=Z systems for which Fermi superallowed decays have been established.

AB - The β+-decay half-lives of the neutron-deficient odd-odd N=Z nuclei 74Rb, 78Y, 82Nb, and 86Tc have been measured following the fragmentation of a primary 92Mo beam at an energy of 60 MeV per nucleon at the GANIL laboratory, France. This was achieved by correlating β+ decays with the implantation of unambiguously identified fragments at the final focus of the LISE3 separator. The deduced log10ft1/2 values are consistent with 0+→0+, Fermi superallowed transitions, which together with the measured β+-detection efficiencies, suggest T=1, Iπ=0+ ground states for these odd-odd N=Z nuclei. These data represent the heaviest N=Z systems for which Fermi superallowed decays have been established.

UR - http://www.scopus.com/inward/record.url?scp=14344280237&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.63.044307

DO - 10.1103/PhysRevC.63.044307

M3 - Article

AN - SCOPUS:14344280237

SN - 0556-2813

VL - 63

SP - 443071

EP - 443079

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044307

ER -

Fermi superallowed β+ decays and T=1 ground states of heavy odd-odd N=Z nuclei

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Fermi superallowed β⁺ decays and T=1 ground states of heavy odd-odd N=Z nuclei