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Angular Momentum Population in the Projectile Fragmentation of U-238 at 750 MeV/nucleon

Gladnishki, K A, Podolyak, Z, Regan, P H, Gerl, J, Hellstrom, M, Kopatch, Y, Mandal, S, Gorska, M, Page, R D, Wollersheim, H J, Banu, A, Benzoni, G, Boardman, H, La Commara, M, Ekman, J, Fahlander, C, Geissel, H, Grawe, H, Kaza, E, Korgul, A, Matos, M, Mineva, M N, Pearson, C J, Plettner, C, Rudolph, D, Scheidenberger, C, Schmidt, K H, Shishkin, V, Sohler, D, Summerer, K, Valiente-Dobon, J J, Walker, P M, Weick, H, Winkler, M and Yordanov, O (2004) Angular Momentum Population in the Projectile Fragmentation of U-238 at 750 MeV/nucleon Physical Review C, 69 (2).

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Abstract

A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Gladnishki, K AUNSPECIFIEDUNSPECIFIED
Podolyak, Zz.podolyak@surrey.ac.ukUNSPECIFIED
Regan, P Hp.regan@surery.ac.ukUNSPECIFIED
Gerl, JUNSPECIFIEDUNSPECIFIED
Hellstrom, MUNSPECIFIEDUNSPECIFIED
Kopatch, YUNSPECIFIEDUNSPECIFIED
Mandal, SUNSPECIFIEDUNSPECIFIED
Gorska, MUNSPECIFIEDUNSPECIFIED
Page, R DUNSPECIFIEDUNSPECIFIED
Wollersheim, H JUNSPECIFIEDUNSPECIFIED
Banu, AUNSPECIFIEDUNSPECIFIED
Benzoni, GUNSPECIFIEDUNSPECIFIED
Boardman, HUNSPECIFIEDUNSPECIFIED
La Commara, MUNSPECIFIEDUNSPECIFIED
Ekman, JUNSPECIFIEDUNSPECIFIED
Fahlander, CUNSPECIFIEDUNSPECIFIED
Geissel, HUNSPECIFIEDUNSPECIFIED
Grawe, HUNSPECIFIEDUNSPECIFIED
Kaza, EUNSPECIFIEDUNSPECIFIED
Korgul, AUNSPECIFIEDUNSPECIFIED
Matos, MUNSPECIFIEDUNSPECIFIED
Mineva, M NUNSPECIFIEDUNSPECIFIED
Pearson, C JUNSPECIFIEDUNSPECIFIED
Plettner, CUNSPECIFIEDUNSPECIFIED
Rudolph, DUNSPECIFIEDUNSPECIFIED
Scheidenberger, CUNSPECIFIEDUNSPECIFIED
Schmidt, K HUNSPECIFIEDUNSPECIFIED
Shishkin, VUNSPECIFIEDUNSPECIFIED
Sohler, DUNSPECIFIEDUNSPECIFIED
Summerer, KUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, J JUNSPECIFIEDUNSPECIFIED
Walker, P Mp.walker@surrey.ac.ukUNSPECIFIED
Weick, HUNSPECIFIEDUNSPECIFIED
Winkler, MUNSPECIFIEDUNSPECIFIED
Yordanov, OUNSPECIFIEDUNSPECIFIED
Date : 1 January 2004
Identification Number : 10.1103/PhysRevC.69.024617
Additional Information : Published in <i>Physical Review C,</i> Vol. 69, Iss. 2. Copyright 2004 American Physical Society. Click <a href=http://prc.aps.org/>here</a> to access the journal's website.
Depositing User : Mr Adam Field
Date Deposited : 27 May 2010 14:08
Last Modified : 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/375

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