Angular momentum population in fragmentation reactions

Ana M. Denis Bacelar, Alison Bruce, Zsolt Podolyák, N. Al-Dahan, M. Gorska, S. Lalkovski, S. Pietri, M.V. Ricciardi, A. Algora, N. Alkhomashi

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Abstract

Using a relativistic transport model followed by a statistical sequential binary emission model, the population of metastable high-spin isomeric states are studied in relativistic projectile fragmentation reactions. The initial angular momentum distribution are generated from hole excitations. We find that the angular momentum distribution of the excited prefragments are considerably broadened due to light particle evaporation. The model reproduces the experimentally measured population of relatively low-lying states and underpredicts states with high angular momentum I 17.h. We propose that coupling the spin of the excited and hole states in the prefragment will give a better understanding of the data.
Original languageEnglish
Pages (from-to)302-306
Number of pages5
JournalPhysics Letters B
Volume723
Issue number4-5
Publication statusPublished - 17 May 2013

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fragmentation
angular momentum
excitation
projectiles
evaporation

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Denis Bacelar, A. M., Bruce, A., Podolyák, Z., Al-Dahan, N., Gorska, M., Lalkovski, S., ... Alkhomashi, N. (2013). Angular momentum population in fragmentation reactions. Physics Letters B, 723(4-5), 302-306.
Denis Bacelar, Ana M. ; Bruce, Alison ; Podolyák, Zsolt ; Al-Dahan, N. ; Gorska, M. ; Lalkovski, S. ; Pietri, S. ; Ricciardi, M.V. ; Algora, A. ; Alkhomashi, N. / Angular momentum population in fragmentation reactions. In: Physics Letters B. 2013 ; Vol. 723, No. 4-5. pp. 302-306.
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author = "{Denis Bacelar}, {Ana M.} and Alison Bruce and Zsolt Podoly{\'a}k and N. Al-Dahan and M. Gorska and S. Lalkovski and S. Pietri and M.V. Ricciardi and A. Algora and N. Alkhomashi",
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Denis Bacelar, AM, Bruce, A, Podolyák, Z, Al-Dahan, N, Gorska, M, Lalkovski, S, Pietri, S, Ricciardi, MV, Algora, A & Alkhomashi, N 2013, 'Angular momentum population in fragmentation reactions' Physics Letters B, vol. 723, no. 4-5, pp. 302-306.

Angular momentum population in fragmentation reactions. / Denis Bacelar, Ana M.; Bruce, Alison; Podolyák, Zsolt; Al-Dahan, N.; Gorska, M.; Lalkovski, S.; Pietri, S.; Ricciardi, M.V.; Algora, A.; Alkhomashi, N.

In: Physics Letters B, Vol. 723, No. 4-5, 17.05.2013, p. 302-306.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Angular momentum population in fragmentation reactions

AU - Denis Bacelar, Ana M.

AU - Bruce, Alison

AU - Podolyák, Zsolt

AU - Al-Dahan, N.

AU - Gorska, M.

AU - Lalkovski, S.

AU - Pietri, S.

AU - Ricciardi, M.V.

AU - Algora, A.

AU - Alkhomashi, N.

PY - 2013/5/17

Y1 - 2013/5/17

N2 - Using a relativistic transport model followed by a statistical sequential binary emission model, the population of metastable high-spin isomeric states are studied in relativistic projectile fragmentation reactions. The initial angular momentum distribution are generated from hole excitations. We find that the angular momentum distribution of the excited prefragments are considerably broadened due to light particle evaporation. The model reproduces the experimentally measured population of relatively low-lying states and underpredicts states with high angular momentum I 17.h. We propose that coupling the spin of the excited and hole states in the prefragment will give a better understanding of the data.

AB - Using a relativistic transport model followed by a statistical sequential binary emission model, the population of metastable high-spin isomeric states are studied in relativistic projectile fragmentation reactions. The initial angular momentum distribution are generated from hole excitations. We find that the angular momentum distribution of the excited prefragments are considerably broadened due to light particle evaporation. The model reproduces the experimentally measured population of relatively low-lying states and underpredicts states with high angular momentum I 17.h. We propose that coupling the spin of the excited and hole states in the prefragment will give a better understanding of the data.

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SP - 302

EP - 306

JO - Physics Letters B

T2 - Physics Letters B

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Denis Bacelar AM, Bruce A, Podolyák Z, Al-Dahan N, Gorska M, Lalkovski S et al. Angular momentum population in fragmentation reactions. Physics Letters B. 2013 May 17;723(4-5):302-306.