Advanced

The population of metastable states as a probe of relativistic-energy fragmentation reactions

Denis Bacelar, A.M. ; Bruce, A.M. ; Podolyák, Zs. ; Al-Dahan, N. ; Górska, M. ; Lalkovski, S. ; Pietri, S. ; Ricciardi, M.V. ; Algora, A. and Alkhomashi, N. , et al. (2013) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 723(4–5). p.302-306
Abstract
Isomeric ratios have been measured for high-spin states in Po-198,200,206,208(84), At-208,209,210,211(85), Rn-210,211,212,213,214(86), Fr-208,211,212,213,214(87), Ra-210,211,212,214,215(88), and Ac-215(89) following the projectile fragmentation of a 1 AGeV U-238 beam by a Be-9 target at GSI Helmholtzzentrum fur Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 mu s and spin values up to 55/2 (h) over bar were used to obtain the corresponding isomeric... (More)
Isomeric ratios have been measured for high-spin states in Po-198,200,206,208(84), At-208,209,210,211(85), Rn-210,211,212,213,214(86), Fr-208,211,212,213,214(87), Ra-210,211,212,214,215(88), and Ac-215(89) following the projectile fragmentation of a 1 AGeV U-238 beam by a Be-9 target at GSI Helmholtzzentrum fur Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 mu s and spin values up to 55/2 (h) over bar were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. (C) 2013 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
723
issue
4–5
pages
302 - 306
publisher
Elsevier
external identifiers
  • wos:000320745400005
  • scopus:84878950917
ISSN
0370-2693
DOI
10.1016/j.physletb.2013.05.033
language
English
LU publication?
yes
id
fa9f0bd0-4ceb-4029-ba51-26edca93c426 (old id 3975109)
alternative location
http://www.sciencedirect.com/science/article/pii/S0370269313004024
date added to LUP
2016-04-01 12:57:54
date last changed
2019-03-08 02:26:09
@article{fa9f0bd0-4ceb-4029-ba51-26edca93c426,
  abstract     = {Isomeric ratios have been measured for high-spin states in Po-198,200,206,208(84), At-208,209,210,211(85), Rn-210,211,212,213,214(86), Fr-208,211,212,213,214(87), Ra-210,211,212,214,215(88), and Ac-215(89) following the projectile fragmentation of a 1 AGeV U-238 beam by a Be-9 target at GSI Helmholtzzentrum fur Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 mu s and spin values up to 55/2 (h) over bar were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Denis Bacelar, A.M. and Bruce, A.M. and Podolyák, Zs. and Al-Dahan, N. and Górska, M. and Lalkovski, S. and Pietri, S. and Ricciardi, M.V. and Algora, A. and Alkhomashi, N. and Benlliure, J. and Boutachkov, P. and Bracco, A. and Calore, E. and Casarejos, E. and Cullen, I.J. and Deo, A.Y. and Detistov, P. and Dombradi, Zs. and Domingo-Pardo, C. and Doncel, M. and Farinon, F. and Farrelly, G.F. and Geissel, H. and Gelletly, W. and Gerl, J. and Goel, N. and Grȩbosz, J. and Hoischen, Robert and Kojouharov, I. and Kurz, N. and Leoni, S. and Molina, F. and Montanari, D. and Morales, A.I. and Musumarra, A. and Napoli, D.R. and Nicolini, R. and Nociforo, C. and Prochazka, A. and Prokopowicz, W. and Regan, P.H. and Rubio, B. and Rudolph, Dirk and Schmidt, K.-H. and Schaffner, H. and Steer, S.J. and Steiger, K. and Strmen, P. and Swan, T.P.D. and Szarka, I. and Valiente-Dobón, J.J. and Verma, S. and Walker, P.M. and Weick, H. and Wollersheim, H.J.},
  issn         = {0370-2693},
  language     = {eng},
  number       = {4–5},
  pages        = {302--306},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {The population of metastable states as a probe of relativistic-energy fragmentation reactions},
  url          = {https://lup.lub.lu.se/search/ws/files/8116153/8498556.pdf},
  doi          = {10.1016/j.physletb.2013.05.033},
  volume       = {723},
  year         = {2013},
}