Examining the exotic structure of the proton-rich nucleus {sup 23}Al

Journal Article · Sat Sep 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.031601· OSTI ID:21064324

Fang, D Q; Guo, W; Ma, C W; Wang, K; Yan, T Z; Ma, Y G; Cai, X Z; Shen, W Q; Chen, J G; Tian, W D; Zhong, C ^[1]; Ren, Z Z ^[2]; Sun, Z Y ^[3]; Hosoi, M; Nakajima, S; Sugawara, K; Suzuki, T; Yamaguchi, T ^[4]; Izumikawa, T; Ohtsubo, T ^[5]

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1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
2. Department of Physics, Nanjing University, Nanjing 210008 (China)
3. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)
4. Department of Physics, Saitama University, Saitama 338-8570 (Japan)
5. Department of Physics, Niigata University, Niigata 950-2181 (Japan)

The longitudinal momentum distribution (P{sub //}) of fragments after one-proton removal from {sup 23}Al and reaction cross sections ({sigma}{sub R}) for {sup 23,24}Al on a carbon target at 74A MeV have been measured. The {sup 23,24}Al ions were produced through projectile fragmentation of 135A MeV {sup 28}Si primary beam using the RIPS fragment separator at RIKEN. P{sub parallel} is measured by a direct time-of-flight (TOF) technique, while {sigma}{sub R} is determined using a transmission method. An enhancement in {sigma}{sub R} is observed for {sup 23}Al compared with {sup 24}Al. The P{sub parallel} for {sup 22}Mg fragments from {sup 23}Al breakup has been obtained for the first time. FWHM of the distributions has been determined to be 232 {+-} 28 MeV/c. The experimental data are discussed by using the Few-Body Glauber model. Analysis of P{sub //} demonstrates a dominant d-wave configuration for the valence proton in ground state of {sup 23}Al, indicating that {sup 23}Al is not a proton halo nucleus.

• OSTI ID: 21064324
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 76; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 23
ALUMINIUM 24
ARSENIC 74
CARBON 12 TARGET
CROSS SECTIONS
D WAVES
DISTRIBUTION
GROUND STATES
HEAVY ION REACTIONS
JAPANESE ORGANIZATIONS
LONGITUDINAL MOMENTUM
MAGNESIUM 22
MEV RANGE
NUCLEAR FRAGMENTATION
NUCLEAR HALOS
PROTONS
SILICON 28
TIME-OF-FLIGHT METHOD