Determination of the radii of some threshold states in light nuclei and observation of neutron halos in the excited states of {sup 13}C and {sup 9}Be

Journal Article · Fri Apr 30 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3431478· OSTI ID:21367223

Danilov, A N; Demyanova, A S; Ogloblin, A A ^[1]; Belyaeva, T L ^[2]; Goncharov, S A ^[3]

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1. RRC Kurchatov Institute, Kurchatov sq. 1, 123182 Moscow (Russian Federation)
2. Universidad Autonoma del Estado Mexico, Toluca (Mexico)
3. Skobeltsyn Institute of Moscow State University, 119992 Moscow (Russian Federation)

Experimental data on alpha-particles inelastic diffractive scattering were analyzed. The main goal of this analysis was radii determination of some exited states of {sup 11}B, {sup 13}C and {sup 9}Be nuclei near the thresholds of alpha-particles and neutron emission. The excited states in {sup 11}B, 8.56 MeV, 3/2{sup -} and {sup 13}C, 8.86 MeV and 11.08 MeV, (1/2){sup -}, which are located close to the 2alpha+t and 3alpha+n thresholds correspondingly, have enlarged radii in comparison with those for the ground states. Their values are approximately equal to the value of the {sup 12}C radius in the exited state 7.65 MeV (0{sup +}). The radius of {sup 13}C in the state 3.09 MeV (1/2{sup +}), lying below the threshold {sup 13}C->{sup 12}C+n is comparable with that of nuclei having a neutron halo. The similar radius enhancement was observed for {sup 9}Be in its first exited state 1/2{sup +}.

• OSTI ID: 21367223
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1224; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALPHA PARTICLES
BERYLLIUM 9
BERYLLIUM ISOTOPES
BORON 11
BORON ISOTOPES
CARBON 12
CARBON 13
CARBON ISOTOPES
CHARGED PARTICLES
CLUSTER MODEL
COMPARATIVE EVALUATIONS
EMISSION
ENERGY LEVELS
ENERGY RANGE
EVALUATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCITED STATES
GROUND STATES
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
NEUTRON EMISSION
NUCLEAR HALOS
NUCLEAR MODELS
NUCLEAR PROPERTIES
NUCLEAR RADII
NUCLEAR STRUCTURE
NUCLEI
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
RADIATIONS
STABLE ISOTOPES