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Observation of the Z = N + 1 Nuclei 7739Y, 7949Zr, and 8342Mo

Janas, Z, Chandler, C, Blank, B, Regan, PH, Bruce, AM, Catford, WN, Curtis, N, Czajkowski, S, Dessagne, P, Fleury, A, Gelletly, W, Giovinazzo, J, Grzywacz, R, Lewitowicz, M, Longour, C, Marchand, C, Miehé, C, Orr, NA, Page, RD, Pearson, CJ, Pravikoff, MS, Reed, AT, Saint-Laurent, MG, Sheikh, JA, Vincent, SM, Wadsworth, R, Warner, DD and Winfield, JS (1999) Observation of the Z = N + 1 Nuclei 7739Y, 7949Zr, and 8342Mo Physical Review Letters, 82 (2). pp. 295-298.

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Abstract

The very neutron deficient Z = N + 1 nuelei 7739Y, 7940Zr, and 8342Mo have been observed for the first time following the fragmentation of a 92Mo beam. In contrast, no evidence was found for the existence of 8141Nb and 8543Tc. The observation of 7739Y is of particular interest in light of the instability of the odd-proton, Z = N + 1 systems, 6935Br, 7337Rb, 8141Nb, and 8543Tc, and may be explained as a consequence of the shape polarizing effect of the highly deformed, prolate Z = N = 38 core. The experimental results are discussed within the framework of the shell-correction model, which together with proton-decay calculations allow an estimate of the proton separation energies of these highly exotic systems to be calculated.

Item Type: Article
Authors :
NameEmailORCID
Janas, ZUNSPECIFIEDUNSPECIFIED
Chandler, CUNSPECIFIEDUNSPECIFIED
Blank, BUNSPECIFIEDUNSPECIFIED
Regan, PHp.regan@surrey.ac.ukUNSPECIFIED
Bruce, AMUNSPECIFIEDUNSPECIFIED
Catford, WNUNSPECIFIEDUNSPECIFIED
Curtis, NUNSPECIFIEDUNSPECIFIED
Czajkowski, SUNSPECIFIEDUNSPECIFIED
Dessagne, PUNSPECIFIEDUNSPECIFIED
Fleury, AUNSPECIFIEDUNSPECIFIED
Gelletly, WUNSPECIFIEDUNSPECIFIED
Giovinazzo, JUNSPECIFIEDUNSPECIFIED
Grzywacz, RUNSPECIFIEDUNSPECIFIED
Lewitowicz, MUNSPECIFIEDUNSPECIFIED
Longour, CUNSPECIFIEDUNSPECIFIED
Marchand, CUNSPECIFIEDUNSPECIFIED
Miehé, CUNSPECIFIEDUNSPECIFIED
Orr, NAUNSPECIFIEDUNSPECIFIED
Page, RDUNSPECIFIEDUNSPECIFIED
Pearson, CJUNSPECIFIEDUNSPECIFIED
Pravikoff, MSUNSPECIFIEDUNSPECIFIED
Reed, ATUNSPECIFIEDUNSPECIFIED
Saint-Laurent, MGUNSPECIFIEDUNSPECIFIED
Sheikh, JAUNSPECIFIEDUNSPECIFIED
Vincent, SMUNSPECIFIEDUNSPECIFIED
Wadsworth, RUNSPECIFIEDUNSPECIFIED
Warner, DDUNSPECIFIEDUNSPECIFIED
Winfield, JSUNSPECIFIEDUNSPECIFIED
Date : 11 January 1999
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/835778

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