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Studies of isomeric states and limits of particle stability around N∼Z∼40 using fragmentation reactions

Regan, PM, Chandler, C, Pearson, CJ, Blank, B, Grzywacz, R, Lewitowicz, M, Bruce, AM, Catford, WN, Curtis, N, Czajkowski, S, Dessagne, P, Fleury, A, Gelletly, W, Giovinazzo, J, Janas, Z, Longour, C, Marchand, C, Miehe, C, Orr, NA, Page, RD, Pravikoff, MS, Reed, AT, Saint-Laurent, MG, Vincent, SM, Wadsworth, R, Warner, DD and Winfield, JS (1997) Studies of isomeric states and limits of particle stability around N∼Z∼40 using fragmentation reactions Acta Physica Polonica B, 28 (1-2). pp. 431-442.

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Abstract

Fragmentation products from a 92Mo beam on a natural nickel target have been used to study structural properties of the very neutron deficient nuclei around N∼Z∼40. We present the first observation of isomeric decays in the Tz=1 systems 3674Kr, 3980 Y and 4184Nb. The isomer in 74Kr is interpreted as the hindered decay from an excited 0+ state, confirming the prediction of prolate/oblate shape coexistence in this nucleus. Transitions from states below an isomer in the N=Z nucleus 4386Tc have also been tentatively identified, making this the heaviest N=Z system for which decays from excited states have been observed. In addition, we have obtained the first conclusive evidence for the existence of the Tz = -1/2 isotopes 3977Y, 4079Zr and 4283Mo. The data for 3977Y is of particular interest in light of the reported instability in the lighter odd-Z, Tz = -1/2 systems 69Br and 73Rb.

Item Type: Article
Authors :
NameEmailORCID
Regan, PMp.regan@surrey.ac.ukUNSPECIFIED
Chandler, CUNSPECIFIEDUNSPECIFIED
Pearson, CJUNSPECIFIEDUNSPECIFIED
Blank, BUNSPECIFIEDUNSPECIFIED
Grzywacz, RUNSPECIFIEDUNSPECIFIED
Lewitowicz, MUNSPECIFIEDUNSPECIFIED
Bruce, AMUNSPECIFIEDUNSPECIFIED
Catford, WNUNSPECIFIEDUNSPECIFIED
Curtis, NUNSPECIFIEDUNSPECIFIED
Czajkowski, SUNSPECIFIEDUNSPECIFIED
Dessagne, PUNSPECIFIEDUNSPECIFIED
Fleury, AUNSPECIFIEDUNSPECIFIED
Gelletly, WUNSPECIFIEDUNSPECIFIED
Giovinazzo, JUNSPECIFIEDUNSPECIFIED
Janas, ZUNSPECIFIEDUNSPECIFIED
Longour, CUNSPECIFIEDUNSPECIFIED
Marchand, CUNSPECIFIEDUNSPECIFIED
Miehe, CUNSPECIFIEDUNSPECIFIED
Orr, NAUNSPECIFIEDUNSPECIFIED
Page, RDUNSPECIFIEDUNSPECIFIED
Pravikoff, MSUNSPECIFIEDUNSPECIFIED
Reed, ATUNSPECIFIEDUNSPECIFIED
Saint-Laurent, MGUNSPECIFIEDUNSPECIFIED
Vincent, SMUNSPECIFIEDUNSPECIFIED
Wadsworth, RUNSPECIFIEDUNSPECIFIED
Warner, DDUNSPECIFIEDUNSPECIFIED
Winfield, JSUNSPECIFIEDUNSPECIFIED
Date : 1 December 1997
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:33
Last Modified : 17 May 2017 15:04
URI: http://epubs.surrey.ac.uk/id/eprint/835780

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