Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al.

D. M. Debenham; M. A. Bentley; P. J. Davies; T. Haylett; D. G. Jenkins; P. Joshi; L. F. Sinclair; R. Wadsworth; P. Ruotsalainen; J. Henderson; K. Kaneko; K. Auranen; H. Badran; T. Grahn; P. Greenlees; A. Herzaáň; U. Jakobsson; J. Konki; R. Julin; S. Juutinen; M. Leino; J. Sorri; J. Pakarinen; P. Papadakis; P. Peura; J. Partanen; P. Rahkila; M. Sandzelius; J. Sarén; C. Scholey; S. Stolze; J. Uusitalo; H. M. David; G. De Angelis; W. Korten; G. Lotay; M. Mallaburn; E. Sahin

doi:10.1103/PhysRevC.94.054311

Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al.

D. M. Debenham, M. A. Bentley, P. J. Davies, T. Haylett, D. G. Jenkins, P. Joshi, L. F. Sinclair, R. Wadsworth, P. Ruotsalainen, J. Henderson, K. Kaneko, K. Auranen, H. Badran, T. Grahn, P. Greenlees, A. Herzaáň, U. Jakobsson, J. Konki, R. Julin, S. JuutinenM. Leino, J. Sorri, J. Pakarinen, P. Papadakis, P. Peura, J. Partanen, P. Rahkila, M. Sandzelius, J. Sarén, C. Scholey, S. Stolze, J. Uusitalo, H. M. David, G. De Angelis, W. Korten, G. Lotay, M. Mallaburn, E. Sahin

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Abstract

The recoil-β tagging technique has been used in conjunction with the Ca40(S32,2n) reaction at a beam energy of 88 MeV to identify transitions associated with the decay of the 2+ and, tentatively, 4+ states in the nucleus Kr70. These data are used, along with previously published data, to examine the triplet energy differences (TED) for the mass 70 isobars. The experimental TED values are compared with shell model calculations, performed with the JUN45 interaction in the fpg model space, that include a J=0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV. The agreement is found to be very good up to spin 4 and supports the expectation for analog states that all three nuclei have the same oblate shape at low-spin. The A=70 results are compared with the experimental and shell model predicted TED and mirror energy differences (MED) for the mass 66 and 74 systems. The comparisons clearly demonstrate the importance of the isotensor INC interaction in replicating the TED data in this region. Issues related to the observed MED values and their interpretation within the shell model are discussed.

Original language	English
Article number	054311
Number of pages	7
Journal	Physical Review C - Nuclear Physics
Volume	94
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.94.054311
Publication status	Published - 14 Nov 2016

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©2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

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Kr70-PRC-accepted-final
©2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Accepted author manuscript, 713 KBLicence: Unspecified

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Debenham, D. M., Bentley, M. A., Davies, P. J., Haylett, T., Jenkins, D. G., Joshi, P., Sinclair, L. F., Wadsworth, R., Ruotsalainen, P., Henderson, J., Kaneko, K., Auranen, K., Badran, H., Grahn, T., Greenlees, P., Herzaáň, A., Jakobsson, U., Konki, J., Julin, R., ... Sahin, E. (2016). Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al. Physical Review C - Nuclear Physics, 94(5), Article 054311. https://doi.org/10.1103/PhysRevC.94.054311

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title = "Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al.",

abstract = "The recoil-β tagging technique has been used in conjunction with the Ca40(S32,2n) reaction at a beam energy of 88 MeV to identify transitions associated with the decay of the 2+ and, tentatively, 4+ states in the nucleus Kr70. These data are used, along with previously published data, to examine the triplet energy differences (TED) for the mass 70 isobars. The experimental TED values are compared with shell model calculations, performed with the JUN45 interaction in the fpg model space, that include a J=0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV. The agreement is found to be very good up to spin 4 and supports the expectation for analog states that all three nuclei have the same oblate shape at low-spin. The A=70 results are compared with the experimental and shell model predicted TED and mirror energy differences (MED) for the mass 66 and 74 systems. The comparisons clearly demonstrate the importance of the isotensor INC interaction in replicating the TED data in this region. Issues related to the observed MED values and their interpretation within the shell model are discussed.",

author = "Debenham, {D. M.} and Bentley, {M. A.} and Davies, {P. J.} and T. Haylett and Jenkins, {D. G.} and P. Joshi and Sinclair, {L. F.} and R. Wadsworth and P. Ruotsalainen and J. Henderson and K. Kaneko and K. Auranen and H. Badran and T. Grahn and P. Greenlees and A. Herza{\'a}{\v n} and U. Jakobsson and J. Konki and R. Julin and S. Juutinen and M. Leino and J. Sorri and J. Pakarinen and P. Papadakis and P. Peura and J. Partanen and P. Rahkila and M. Sandzelius and J. Sar{\'e}n and C. Scholey and S. Stolze and J. Uusitalo and David, {H. M.} and {De Angelis}, G. and W. Korten and G. Lotay and M. Mallaburn and E. Sahin",

note = "{\textcopyright}2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details",

year = "2016",

month = nov,

day = "14",

doi = "10.1103/PhysRevC.94.054311",

language = "English",

volume = "94",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

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Debenham, DM, Bentley, MA , Davies, PJ, Haylett, T, Jenkins, DG , Joshi, P, Sinclair, LF, Wadsworth, R, Ruotsalainen, P, Henderson, J, Kaneko, K, Auranen, K, Badran, H, Grahn, T, Greenlees, P, Herzaáň, A, Jakobsson, U, Konki, J, Julin, R, Juutinen, S, Leino, M, Sorri, J, Pakarinen, J, Papadakis, P, Peura, P, Partanen, J, Rahkila, P, Sandzelius, M, Sarén, J, Scholey, C, Stolze, S, Uusitalo, J, David, HM, De Angelis, G, Korten, W, Lotay, G, Mallaburn, M & Sahin, E 2016, 'Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al.', Physical Review C - Nuclear Physics, vol. 94, no. 5, 054311. https://doi.org/10.1103/PhysRevC.94.054311

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AU - Sinclair, L. F.

AU - Wadsworth, R.

AU - Ruotsalainen, P.

AU - Henderson, J.

AU - Kaneko, K.

AU - Auranen, K.

AU - Badran, H.

AU - Grahn, T.

AU - Greenlees, P.

AU - Herzaáň, A.

AU - Jakobsson, U.

AU - Konki, J.

AU - Julin, R.

AU - Juutinen, S.

AU - Leino, M.

AU - Sorri, J.

AU - Pakarinen, J.

AU - Papadakis, P.

AU - Peura, P.

AU - Partanen, J.

AU - Rahkila, P.

AU - Sandzelius, M.

AU - Sarén, J.

AU - Scholey, C.

AU - Stolze, S.

AU - Uusitalo, J.

AU - David, H. M.

AU - De Angelis, G.

AU - Korten, W.

AU - Lotay, G.

AU - Mallaburn, M.

AU - Sahin, E.

N1 - ©2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2016/11/14

Y1 - 2016/11/14

N2 - The recoil-β tagging technique has been used in conjunction with the Ca40(S32,2n) reaction at a beam energy of 88 MeV to identify transitions associated with the decay of the 2+ and, tentatively, 4+ states in the nucleus Kr70. These data are used, along with previously published data, to examine the triplet energy differences (TED) for the mass 70 isobars. The experimental TED values are compared with shell model calculations, performed with the JUN45 interaction in the fpg model space, that include a J=0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV. The agreement is found to be very good up to spin 4 and supports the expectation for analog states that all three nuclei have the same oblate shape at low-spin. The A=70 results are compared with the experimental and shell model predicted TED and mirror energy differences (MED) for the mass 66 and 74 systems. The comparisons clearly demonstrate the importance of the isotensor INC interaction in replicating the TED data in this region. Issues related to the observed MED values and their interpretation within the shell model are discussed.

AB - The recoil-β tagging technique has been used in conjunction with the Ca40(S32,2n) reaction at a beam energy of 88 MeV to identify transitions associated with the decay of the 2+ and, tentatively, 4+ states in the nucleus Kr70. These data are used, along with previously published data, to examine the triplet energy differences (TED) for the mass 70 isobars. The experimental TED values are compared with shell model calculations, performed with the JUN45 interaction in the fpg model space, that include a J=0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV. The agreement is found to be very good up to spin 4 and supports the expectation for analog states that all three nuclei have the same oblate shape at low-spin. The A=70 results are compared with the experimental and shell model predicted TED and mirror energy differences (MED) for the mass 66 and 74 systems. The comparisons clearly demonstrate the importance of the isotensor INC interaction in replicating the TED data in this region. Issues related to the observed MED values and their interpretation within the shell model are discussed.

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U2 - 10.1103/PhysRevC.94.054311

DO - 10.1103/PhysRevC.94.054311

M3 - Article

AN - SCOPUS:84996798732

SN - 0556-2813

VL - 94

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

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ER -

Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al.

Abstract

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Nuclear Physics Consolidated Grant

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Spectroscopy of Kr 70 and isospin symmetry in the T=1 fpg shell nuclei SPECTROSCOPY of Kr 70 and ISOSPIN SYMMETRY ... D. M. DEBENHAM et al.

Abstract

Bibliographical note

Access to Document

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Projects

Nuclear Physics Consolidated Grant

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