New results on the halo structure of 8B
(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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/145cfddc-adcc-4753-af27-ec5d4012e332
- author
- Smedberg, M H
; Baumann, T
; Aumann, T
; Axelsson, L.
; Bergmann, U. C.
; Borge, M J G
; Cortina-Gil, D.
; Fraile, L. M.
; Geissel, H
; Grigorenko, L.
; Hellström, M.
LU
; Ivanov, M.
; Iwasa, N.
; Janik, R.
; Jonson, B.
; Lenske, H
; Markenroth, K.
LU
; Münzenberg, G.
; Nilsson, T.
; Richter, A
; Riisager, K.
; Scheidenberger, C.
; Schrieder, G
; Schwab, W
; Simon, H.
; Sitar, B.
; Strmen, P.
; Sümmerer, K.
; Winkler, M.
and Zhukov, M V
(Less) - publishing date
- 1999
- 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
- 2022-04-06 11:30:23
@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.</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}},
keywords = {{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}},
doi = {{10.1016/S0370-2693(99)00245-2}},
volume = {{452}},
year = {{1999}},
}