Studies on the double-beta decay nucleus 64Zn using the (d,2He) reaction

E.-W. Grewe; C. Baumer; H. Dohmann; D. Frekers; M.N. Harakeh; S. Hollstein; H. Johansson; K. Langanke; G. Martinez-Pinedo; F. Nowacki; I. Petermann; Lucia Popescu; S. Rakers; D. Savran; K. Sieja; H. Simon; J.H. Thies; A.M. van den Berg; H.J. Wortche; A. Zilgers; Jan Heyse

doi:10.1103/PhysRevC.77.064303

Studies on the double-beta decay nucleus 64Zn using the (d,2He) reaction

E.-W. Grewe, C. Baumer, H. Dohmann, D. Frekers, M.N. Harakeh, S. Hollstein, H. Johansson, K. Langanke, G. Martinez-Pinedo, F. Nowacki, I. Petermann, Lucia Popescu, S. Rakers, D. Savran, K. Sieja, H. Simon, J.H. Thies, A.M. van den Berg, H.J. Wortche, A. ZilgersJan Heyse

Research output › peer-review

Abstract

The (d,2He) charge-exchange reaction on the double-beta decay (ββ) nucleus 64Zn has been studied at an incident energy of 183 MeV. The two protons in the 1S0 state (indicated as 2He) were both momentum analyzed and detected simultaneously by the BBS magnetic spectrometer and its position-sensitive detector. 2He spectra with a resolution of about 115 keV (FWHM) have been obtained allowing identification of many levels in the residual nucleus 64Cu with high precision. 64Zn is one of the rare cases undergoing a ββ decay in β+ direction. In the experiment presented here, Gamow-Teller (GT+ ) transition strengths have been extracted. Together with the GT− transition strengths from 64 Ni(3 He,t) data to the same intermediate nucleus 64Cu, the nuclear matrix elements of the ββ decay of 64Zn have been evaluated. Finally, the GT± distributions are compared with shell-model calculations and a critical assessment is given of the various residual interactions presently employed for the pf shell.

Original language	English
Pages (from-to)	64303-64303
Journal	Physical Review C
Volume	77
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.77.064303
State	Published - 4 Jun 2008

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Grewe, E-W., Baumer, C., Dohmann, H., Frekers, D., Harakeh, M. N., Hollstein, S., Johansson, H., Langanke, K., Martinez-Pinedo, G., Nowacki, F., Petermann, I., Popescu, L., Rakers, S., Savran, D., Sieja, K., Simon, H., Thies, J. H., van den Berg, A. M., Wortche, H. J., ... Heyse, J. (2008). Studies on the double-beta decay nucleus 64Zn using the (d,2He) reaction. Physical Review C, 77(6), 64303-64303. https://doi.org/10.1103/PhysRevC.77.064303

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title = "Studies on the double-beta decay nucleus 64Zn using the (d,2He) reaction",

abstract = "The (d,2He) charge-exchange reaction on the double-beta decay (ββ) nucleus 64Zn has been studied at an incident energy of 183 MeV. The two protons in the 1S0 state (indicated as 2He) were both momentum analyzed and detected simultaneously by the BBS magnetic spectrometer and its position-sensitive detector. 2He spectra with a resolution of about 115 keV (FWHM) have been obtained allowing identification of many levels in the residual nucleus 64Cu with high precision. 64Zn is one of the rare cases undergoing a ββ decay in β+ direction. In the experiment presented here, Gamow-Teller (GT+ ) transition strengths have been extracted. Together with the GT− transition strengths from 64 Ni(3 He,t) data to the same intermediate nucleus 64Cu, the nuclear matrix elements of the ββ decay of 64Zn have been evaluated. Finally, the GT± distributions are compared with shell-model calculations and a critical assessment is given of the various residual interactions presently employed for the pf shell.",

keywords = "nuclear structure, double-beta decay, charge-exchange reactions, Gamow-Teller strength",

author = "E.-W. Grewe and C. Baumer and H. Dohmann and D. Frekers and M.N. Harakeh and S. Hollstein and H. Johansson and K. Langanke and G. Martinez-Pinedo and F. Nowacki and I. Petermann and Lucia Popescu and S. Rakers and D. Savran and K. Sieja and H. Simon and J.H. Thies and {van den Berg}, A.M. and H.J. Wortche and A. Zilgers and Jan Heyse",

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year = "2008",

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doi = "10.1103/PhysRevC.77.064303",

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Grewe, E-W, Baumer, C, Dohmann, H, Frekers, D, Harakeh, MN, Hollstein, S, Johansson, H, Langanke, K, Martinez-Pinedo, G, Nowacki, F, Petermann, I, Popescu, L, Rakers, S, Savran, D, Sieja, K, Simon, H, Thies, JH, van den Berg, AM, Wortche, HJ, Zilgers, A & Heyse, J 2008, 'Studies on the double-beta decay nucleus 64Zn using the (d,2He) reaction', Physical Review C, vol. 77, no. 6, pp. 64303-64303. https://doi.org/10.1103/PhysRevC.77.064303

TY - JOUR

T1 - Studies on the double-beta decay nucleus 64Zn using the (d,2He) reaction

AU - Grewe, E.-W.

AU - Baumer, C.

AU - Dohmann, H.

AU - Frekers, D.

AU - Harakeh, M.N.

AU - Hollstein, S.

AU - Johansson, H.

AU - Langanke, K.

AU - Martinez-Pinedo, G.

AU - Nowacki, F.

AU - Petermann, I.

AU - Popescu, Lucia

AU - Rakers, S.

AU - Savran, D.

AU - Sieja, K.

AU - Simon, H.

AU - Thies, J.H.

AU - van den Berg, A.M.

AU - Wortche, H.J.

AU - Zilgers, A.

A2 - Heyse, Jan

N1 - Score = 10

PY - 2008/6/4

Y1 - 2008/6/4

N2 - The (d,2He) charge-exchange reaction on the double-beta decay (ββ) nucleus 64Zn has been studied at an incident energy of 183 MeV. The two protons in the 1S0 state (indicated as 2He) were both momentum analyzed and detected simultaneously by the BBS magnetic spectrometer and its position-sensitive detector. 2He spectra with a resolution of about 115 keV (FWHM) have been obtained allowing identification of many levels in the residual nucleus 64Cu with high precision. 64Zn is one of the rare cases undergoing a ββ decay in β+ direction. In the experiment presented here, Gamow-Teller (GT+ ) transition strengths have been extracted. Together with the GT− transition strengths from 64 Ni(3 He,t) data to the same intermediate nucleus 64Cu, the nuclear matrix elements of the ββ decay of 64Zn have been evaluated. Finally, the GT± distributions are compared with shell-model calculations and a critical assessment is given of the various residual interactions presently employed for the pf shell.

AB - The (d,2He) charge-exchange reaction on the double-beta decay (ββ) nucleus 64Zn has been studied at an incident energy of 183 MeV. The two protons in the 1S0 state (indicated as 2He) were both momentum analyzed and detected simultaneously by the BBS magnetic spectrometer and its position-sensitive detector. 2He spectra with a resolution of about 115 keV (FWHM) have been obtained allowing identification of many levels in the residual nucleus 64Cu with high precision. 64Zn is one of the rare cases undergoing a ββ decay in β+ direction. In the experiment presented here, Gamow-Teller (GT+ ) transition strengths have been extracted. Together with the GT− transition strengths from 64 Ni(3 He,t) data to the same intermediate nucleus 64Cu, the nuclear matrix elements of the ββ decay of 64Zn have been evaluated. Finally, the GT± distributions are compared with shell-model calculations and a critical assessment is given of the various residual interactions presently employed for the pf shell.

KW - nuclear structure

KW - double-beta decay

KW - charge-exchange reactions

KW - Gamow-Teller strength

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_89195

UR - http://knowledgecentre.sckcen.be/so2/bibref/5026

U2 - 10.1103/PhysRevC.77.064303

DO - 10.1103/PhysRevC.77.064303

M3 - Article

SN - 0556-2813

VL - 77

SP - 64303

EP - 64303

JO - Physical Review C

JF - Physical Review C

IS - 6

ER -