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New results on the halo structure of 8B

Smedberg, M H; Baumann, T; Aumann, T; Axelsson, L.; Bergmann, U. C.; Borge, M J G; Cortina-Gil, D.; Fraile, L. M.; Geissel, H and Grigorenko, L., et al. (1999) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 452(1-2). p.1-7
Abstract

The longitudinal momentum distribution of Be fragments after fragmentation of B and the one-proton removal cross section (σ-1p) in a carbon target were measured at 1440 MeV/u with the fragment separator FRS used as an energy-loss spectrometer. The results show a narrow momentum distribution with a FWHM value of 91 ± 5 MeV/c and a large cross-section, σ-1p = 98 ± 6 mb. Both these results support the interpretation of a spatially extended proton orbit forming a halo in the B ground state. The momentum distribution and the one-proton removal cross section are shown to be reproduced with a three-body wave function for 8B where the target is treated as a black disc in the breakup process. © 1999 Published by... (More)

The longitudinal momentum distribution of Be fragments after fragmentation of B and the one-proton removal cross section (σ-1p) in a carbon target were measured at 1440 MeV/u with the fragment separator FRS used as an energy-loss spectrometer. The results show a narrow momentum distribution with a FWHM value of 91 ± 5 MeV/c and a large cross-section, σ-1p = 98 ± 6 mb. Both these results support the interpretation of a spatially extended proton orbit forming a halo in the B ground state. The momentum distribution and the one-proton removal cross section are shown to be reproduced with a three-body wave function for 8B where the target is treated as a black disc in the breakup process. © 1999 Published by Elsevier Science B.V. All rights reserved.

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type
Contribution to journal
publication status
published
keywords
Breakup reactions, Momentum distributions, Nuclear structure, One-proton removal cross section, Unstable nuclei
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
452
issue
1-2
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:0002534229
ISSN
0370-2693
DOI
10.1016/S0370-2693(99)00245-2
language
English
LU publication?
no
id
145cfddc-adcc-4753-af27-ec5d4012e332
date added to LUP
2017-03-06 22:57:22
date last changed
2017-05-08 07:43:56
@article{145cfddc-adcc-4753-af27-ec5d4012e332,
  abstract     = {<p>The longitudinal momentum distribution of Be fragments after fragmentation of B and the one-proton removal cross section (σ<sub>-1p</sub>) in a carbon target were measured at 1440 MeV/u with the fragment separator FRS used as an energy-loss spectrometer. The results show a narrow momentum distribution with a FWHM value of 91 ± 5 MeV/c and a large cross-section, σ<sub>-1p</sub> = 98 ± 6 mb. Both these results support the interpretation of a spatially extended proton orbit forming a halo in the B ground state. The momentum distribution and the one-proton removal cross section are shown to be reproduced with a three-body wave function for <sup>8</sup>B where the target is treated as a black disc in the breakup process. © 1999 Published by Elsevier Science B.V. All rights reserved.</p>},
  author       = {Smedberg, M H and Baumann, T and Aumann, T and Axelsson, L. and Bergmann, U. C. and Borge, M J G and Cortina-Gil, D. and Fraile, L. M. and Geissel, H and Grigorenko, L. and Hellström, M. and Ivanov, M. and Iwasa, N. and Janik, R. and Jonson, B. and Lenske, H and Markenroth, K. and Münzenberg, G. and Nilsson, T. and Richter, A and Riisager, K. and Scheidenberger, C. and Schrieder, G and Schwab, W and Simon, H. and Sitar, B. and Strmen, P. and Sümmerer, K. and Winkler, M. and Zhukov, M V},
  issn         = {0370-2693},
  keyword      = {Breakup reactions,Momentum distributions,Nuclear structure,One-proton removal cross section,Unstable nuclei},
  language     = {eng},
  number       = {1-2},
  pages        = {1--7},
  publisher    = {Elsevier},
  series       = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {New results on the halo structure of 8B},
  url          = {http://dx.doi.org/10.1016/S0370-2693(99)00245-2},
  volume       = {452},
  year         = {1999},
}