Structure of neutron-rich oxygen isotopes
(2005) In Journal of Physics G: Nuclear and Particle Physics 31(10). p.1629-1632- Abstract
- One-nucleon removal reactions at relativistic energies have been used as a spectroscopic tool for obtaining information about the ground state of neutron-rich oxygen isotopes. Using the FRS at GSI, the longitudinal momentum distributions of the emerging fragments after breakup were measured along with the one-nucleon removal cross-sections. The relative contributions of the remaining fragments in their ground and excited states have been determined for a few cases from measurements of γ rays in coincidence with the longitudinal momentum distribution. The controversial case of 23O has been directly addressed. Comparison of our exclusive momentum distributions for the one-neutron removal channel to theoretical momentum distributions... (More)
- One-nucleon removal reactions at relativistic energies have been used as a spectroscopic tool for obtaining information about the ground state of neutron-rich oxygen isotopes. Using the FRS at GSI, the longitudinal momentum distributions of the emerging fragments after breakup were measured along with the one-nucleon removal cross-sections. The relative contributions of the remaining fragments in their ground and excited states have been determined for a few cases from measurements of γ rays in coincidence with the longitudinal momentum distribution. The controversial case of 23O has been directly addressed. Comparison of our exclusive momentum distributions for the one-neutron removal channel to theoretical momentum distributions calculated with an Eikonal model for the knockout process rendered a spin and parity of Iπ = 1/2+ for the 23O ground state. This result resolves the existent experimental discrepancy and supports sub-shell closure at N = 14 with a fairly pure 2s1/2 neutron in 23O. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1133250
- author
- Cortina-Gil, D
; Fernandez-Vazquez, J
; Aumann, T
; Baumann, T
; Benlliure, J
; Borge, M J G
; Chulkov, L V
; Pramanik, U D
; Forssen, C
; Fraile, L M
; Geissel, H
; Gerl, J
; Hammache, F
; Itahashi, K
; Janik, R
; Jonson, B
; Mandal, S
; Markenroth Bloch, Karin
LU
; Meister, M
; Mocko, M
; Muenzenberg, G
; Ohtsubo, T
; Ozawa, A
; Prezado, Y
; Riisager, K
; Scheit, H
; Schneider, R
; Schrieder, G
; Simon, H
; Sitar, B
; Stolz, A
; Strmen, P
; Suemmerer, K
; Szarka, I
and Weick, H
(Less) - publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- in
- Journal of Physics G: Nuclear and Particle Physics
- volume
- 31
- issue
- 10
- pages
- 1629 - 1632
- publisher
- IOP Publishing
- external identifiers
-
- scopus:25444514753
- ISSN
- 0954-3899
- DOI
- 10.1088/0954-3899/31/10/045
- language
- English
- LU publication?
- no
- id
- 46a8605f-3a35-4fa8-8363-5c1da378b6e2 (old id 1133250)
- date added to LUP
- 2016-04-01 16:57:30
- date last changed
- 2022-04-06 11:30:23
@article{46a8605f-3a35-4fa8-8363-5c1da378b6e2,
abstract = {{One-nucleon removal reactions at relativistic energies have been used as a spectroscopic tool for obtaining information about the ground state of neutron-rich oxygen isotopes. Using the FRS at GSI, the longitudinal momentum distributions of the emerging fragments after breakup were measured along with the one-nucleon removal cross-sections. The relative contributions of the remaining fragments in their ground and excited states have been determined for a few cases from measurements of γ rays in coincidence with the longitudinal momentum distribution. The controversial case of 23O has been directly addressed. Comparison of our exclusive momentum distributions for the one-neutron removal channel to theoretical momentum distributions calculated with an Eikonal model for the knockout process rendered a spin and parity of Iπ = 1/2+ for the 23O ground state. This result resolves the existent experimental discrepancy and supports sub-shell closure at N = 14 with a fairly pure 2s1/2 neutron in 23O.}},
author = {{Cortina-Gil, D and Fernandez-Vazquez, J and Aumann, T and Baumann, T and Benlliure, J and Borge, M J G and Chulkov, L V and Pramanik, U D and Forssen, C and Fraile, L M and Geissel, H and Gerl, J and Hammache, F and Itahashi, K and Janik, R and Jonson, B and Mandal, S and Markenroth Bloch, Karin and Meister, M and Mocko, M and Muenzenberg, G and Ohtsubo, T and Ozawa, A and Prezado, Y and Riisager, K and Scheit, H and Schneider, R and Schrieder, G and Simon, H and Sitar, B and Stolz, A and Strmen, P and Suemmerer, K and Szarka, I and Weick, H}},
issn = {{0954-3899}},
language = {{eng}},
number = {{10}},
pages = {{1629--1632}},
publisher = {{IOP Publishing}},
series = {{Journal of Physics G: Nuclear and Particle Physics}},
title = {{Structure of neutron-rich oxygen isotopes}},
url = {{http://dx.doi.org/10.1088/0954-3899/31/10/045}},
doi = {{10.1088/0954-3899/31/10/045}},
volume = {{31}},
year = {{2005}},
}