Three-body correlations in electromagnetic dissociation of Borromean nuclei: The He-6 case
(2005) In Nuclear Physics, Section A 759(1-2). p.23-42- Abstract
- Dissociation of 6He on a lead target has been studied at 240 MeV/u. The four-momenta of the two neutrons in coincidence with greek small letter alpha-particles have been measured and used to reconstruct the three-body energy and angular correlations in the final state. For the first time, three-body correlations were included in the analysis of the 6He dissociation data, and compared with calculations assuming a dipole mode for the electromagnetic dissociation. In addition, the experimental data have been analyzed using a series expansion of the final transition amplitude into hyperspherical functions, showing the importance of both nn and greek small letter alphan final-state interactions. It is shown that the dissociation process is... (More)
- Dissociation of 6He on a lead target has been studied at 240 MeV/u. The four-momenta of the two neutrons in coincidence with greek small letter alpha-particles have been measured and used to reconstruct the three-body energy and angular correlations in the final state. For the first time, three-body correlations were included in the analysis of the 6He dissociation data, and compared with calculations assuming a dipole mode for the electromagnetic dissociation. In addition, the experimental data have been analyzed using a series expansion of the final transition amplitude into hyperspherical functions, showing the importance of both nn and greek small letter alphan final-state interactions. It is shown that the dissociation process is governed by a transition of one neutron from the p-shell in the 6He ground state to the s-shell in the continuum further indicating that the role of the transition through an intermediate 5He(3/2−) state is more important than expected. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1133231
- author
- Chulkov, L V
; Simon, H
; Thompson, I J
; Aumann, T
; Borge, M J G
; Elze, T W
; Emling, H
; Geissel, H
; Grigorenko, L V
; Hellström, Margareta
LU
; Jonson, B
; Kratz, J W V
; Kulessa, R
; Markenroth Bloch, Karin
LU
; Meister, M
; Munzenberg, G
; Nickel, F
; Nilsson, T
; Nyman, G
; Pribora, V
; Richter, A
; Riisager, K
; Scheidenberger, C
; Schrieder, G
; Tengblad, O
and Zhukov, M V
(Less) - publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- keywords
- 6He, Unstable nuclei, Coulomb excitation, Particle correlations
- in
- Nuclear Physics, Section A
- volume
- 759
- issue
- 1-2
- pages
- 23 - 42
- publisher
- Elsevier
- external identifiers
-
- scopus:22544434330
- ISSN
- 0375-9474
- DOI
- 10.1016/j.nuclphysa.2005.05.001
- language
- English
- LU publication?
- no
- id
- a5502f96-c943-477f-bf1d-bb9ea0c844f1 (old id 1133231)
- date added to LUP
- 2016-04-01 16:15:58
- date last changed
- 2022-04-06 11:30:22
@article{a5502f96-c943-477f-bf1d-bb9ea0c844f1,
abstract = {{Dissociation of 6He on a lead target has been studied at 240 MeV/u. The four-momenta of the two neutrons in coincidence with greek small letter alpha-particles have been measured and used to reconstruct the three-body energy and angular correlations in the final state. For the first time, three-body correlations were included in the analysis of the 6He dissociation data, and compared with calculations assuming a dipole mode for the electromagnetic dissociation. In addition, the experimental data have been analyzed using a series expansion of the final transition amplitude into hyperspherical functions, showing the importance of both nn and greek small letter alphan final-state interactions. It is shown that the dissociation process is governed by a transition of one neutron from the p-shell in the 6He ground state to the s-shell in the continuum further indicating that the role of the transition through an intermediate 5He(3/2−) state is more important than expected.}},
author = {{Chulkov, L V and Simon, H and Thompson, I J and Aumann, T and Borge, M J G and Elze, T W and Emling, H and Geissel, H and Grigorenko, L V and Hellström, Margareta and Jonson, B and Kratz, J W V and Kulessa, R and Markenroth Bloch, Karin and Meister, M and Munzenberg, G and Nickel, F and Nilsson, T and Nyman, G and Pribora, V and Richter, A and Riisager, K and Scheidenberger, C and Schrieder, G and Tengblad, O and Zhukov, M V}},
issn = {{0375-9474}},
keywords = {{6He; Unstable nuclei; Coulomb excitation; Particle correlations}},
language = {{eng}},
number = {{1-2}},
pages = {{23--42}},
publisher = {{Elsevier}},
series = {{Nuclear Physics, Section A}},
title = {{Three-body correlations in electromagnetic dissociation of Borromean nuclei: The He-6 case}},
url = {{http://dx.doi.org/10.1016/j.nuclphysa.2005.05.001}},
doi = {{10.1016/j.nuclphysa.2005.05.001}},
volume = {{759}},
year = {{2005}},
}