University of Surrey

Test tubes in the lab Research in the ATI Dance Research

One-neutron knockout from 51-55Sc

Schwertel, S, Maierbeck, P, Krucken, R, Gernhauser, R, Kroll, T, Alvarez-Pol, H, Aksouh, F, Aumann, T, Behr, K, Benjamim, EA , Benlliure, J, Bildstein, V, Bohmer, M, Boretzky, K, Borge, MJG, Brunle, A, Burger, A, Caamano, M, Casarejos, E, Chatillon, A, Chulkov, LV, Cortina-Gil, D, Enders, J, Eppinger, K, Faestermann, T, Friese, J, Fabbietti, L, Gascon, M, Geissel, H, Gerl, J, Gorska, M, Hansen, PG, Jonson, B, Kanungo, R, Kiselev, O, Kojouharov, I, Klimkiewicz, A, Kurtukian, T, Kurz, N, Larsson, K, LeBleis, T, Mahata, K, Maier, L, Nilsson, T, Nociforo, C, Nyman, G, Pascual-Izarra, C, Perea, A, Perez, D, Prochazka, A, Rodriguez-Tajes, C, Rossi, D, Schaner, H, Schrieder, G, Simon, H, Sitar, B, Stanoiu, M, Summerer, K, Tengblad, O, Weick, H, Winkler, S, Brown, BA, Otsuka, T, Tostevin, JA and Rae, WDM (2012) One-neutron knockout from 51-55Sc European Physical Journal A: Hadrons and Nuclei, 48 (12), 191.

[img] Text
10.1140_epja_i2012-12191-5.pdf
Restricted to Repository staff only
Available under License : See the attached licence file.

Download (951kB)
[img] Text (licence)
SRI_deposit_agreement.pdf
Restricted to Repository staff only

Download (33kB)

Abstract

Results are presented from a one-neutron knockout experiment at relativistic energies of $ \approx 420 A$ MeV on 51-55Sc using the GSI Fragment Separator as a two-stage magnetic spectrometer and the MINIBALL array for gamma-ray detection. Inclusive longitudinal momentum distributions and cross-sections were measured enabling the determination of the contributions corresponding to knockout from the $ \nu p_{1/2}$ , $ \nu p_{3/2}$ , (L = 1 and $ \nu f_{7/2}$ , $ \nu f_{5/2}$ (L = 3 neutron orbitals. The observed L = 1 and L = 3 contributions are compared with theoretical cross-sections using eikonal knockout theory and spectroscopic factors from shell model calculations using the GXPF1A interaction. The measured inclusive knockout cross-sections generally follow the trends expected theoretically and given by the spectroscopic strength predicted from the shell model calculations. However, the deduced L = 1 cross-sections are generally 30-40% higher while the L = 3 contributions are about a factor of two smaller than predicted. This points to a promotion of neutrons from the $ \nu f_{7/2}$ to the $ \nu p_{3/2}$ orbital indicating a weakening of the N = 28 shell gap in these nuclei. While this is not predicted for the phenomenological GXPF1A interaction such a weakening is predicted by recent calculations using realistic low-momentum interactions $ V_{low k}$ obtained by evolving a chiral N3LO nucleon-nucleon potential.

Item Type: Article
Authors :
NameEmailORCID
Schwertel, SUNSPECIFIEDUNSPECIFIED
Maierbeck, PUNSPECIFIEDUNSPECIFIED
Krucken, RUNSPECIFIEDUNSPECIFIED
Gernhauser, RUNSPECIFIEDUNSPECIFIED
Kroll, TUNSPECIFIEDUNSPECIFIED
Alvarez-Pol, HUNSPECIFIEDUNSPECIFIED
Aksouh, FUNSPECIFIEDUNSPECIFIED
Aumann, TUNSPECIFIEDUNSPECIFIED
Behr, KUNSPECIFIEDUNSPECIFIED
Benjamim, EAUNSPECIFIEDUNSPECIFIED
Benlliure, JUNSPECIFIEDUNSPECIFIED
Bildstein, VUNSPECIFIEDUNSPECIFIED
Bohmer, MUNSPECIFIEDUNSPECIFIED
Boretzky, KUNSPECIFIEDUNSPECIFIED
Borge, MJGUNSPECIFIEDUNSPECIFIED
Brunle, AUNSPECIFIEDUNSPECIFIED
Burger, AUNSPECIFIEDUNSPECIFIED
Caamano, MUNSPECIFIEDUNSPECIFIED
Casarejos, EUNSPECIFIEDUNSPECIFIED
Chatillon, AUNSPECIFIEDUNSPECIFIED
Chulkov, LVUNSPECIFIEDUNSPECIFIED
Cortina-Gil, DUNSPECIFIEDUNSPECIFIED
Enders, JUNSPECIFIEDUNSPECIFIED
Eppinger, KUNSPECIFIEDUNSPECIFIED
Faestermann, TUNSPECIFIEDUNSPECIFIED
Friese, JUNSPECIFIEDUNSPECIFIED
Fabbietti, LUNSPECIFIEDUNSPECIFIED
Gascon, MUNSPECIFIEDUNSPECIFIED
Geissel, HUNSPECIFIEDUNSPECIFIED
Gerl, JUNSPECIFIEDUNSPECIFIED
Gorska, MUNSPECIFIEDUNSPECIFIED
Hansen, PGUNSPECIFIEDUNSPECIFIED
Jonson, BUNSPECIFIEDUNSPECIFIED
Kanungo, RUNSPECIFIEDUNSPECIFIED
Kiselev, OUNSPECIFIEDUNSPECIFIED
Kojouharov, IUNSPECIFIEDUNSPECIFIED
Klimkiewicz, AUNSPECIFIEDUNSPECIFIED
Kurtukian, TUNSPECIFIEDUNSPECIFIED
Kurz, NUNSPECIFIEDUNSPECIFIED
Larsson, KUNSPECIFIEDUNSPECIFIED
LeBleis, TUNSPECIFIEDUNSPECIFIED
Mahata, KUNSPECIFIEDUNSPECIFIED
Maier, LUNSPECIFIEDUNSPECIFIED
Nilsson, TUNSPECIFIEDUNSPECIFIED
Nociforo, CUNSPECIFIEDUNSPECIFIED
Nyman, GUNSPECIFIEDUNSPECIFIED
Pascual-Izarra, CUNSPECIFIEDUNSPECIFIED
Perea, AUNSPECIFIEDUNSPECIFIED
Perez, DUNSPECIFIEDUNSPECIFIED
Prochazka, AUNSPECIFIEDUNSPECIFIED
Rodriguez-Tajes, CUNSPECIFIEDUNSPECIFIED
Rossi, DUNSPECIFIEDUNSPECIFIED
Schaner, HUNSPECIFIEDUNSPECIFIED
Schrieder, GUNSPECIFIEDUNSPECIFIED
Simon, HUNSPECIFIEDUNSPECIFIED
Sitar, BUNSPECIFIEDUNSPECIFIED
Stanoiu, MUNSPECIFIEDUNSPECIFIED
Summerer, KUNSPECIFIEDUNSPECIFIED
Tengblad, OUNSPECIFIEDUNSPECIFIED
Weick, HUNSPECIFIEDUNSPECIFIED
Winkler, SUNSPECIFIEDUNSPECIFIED
Brown, BAUNSPECIFIEDUNSPECIFIED
Otsuka, TUNSPECIFIEDUNSPECIFIED
Tostevin, JAUNSPECIFIEDUNSPECIFIED
Rae, WDMUNSPECIFIEDUNSPECIFIED
Date : 20 December 2012
Identification Number : 10.1140/epja/i2012-12191-5
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 14:14
Last Modified : 31 Oct 2017 14:55
URI: http://epubs.surrey.ac.uk/id/eprint/745512

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800