https://doi.org/10.1140/epja/i2009-10772-y
Regular Article - Experimental Physics
Light-charged-particle emission from hot 32S*formed in 20Ne + 12C reaction
Variable Energy Cyclotron Centre, Sector - 1, Block - AF, 700 064, Bidhan Nagar, Kolkata, India
* e-mail: aparajita.dey@saha.ac.in
Received:
12
November
2008
Revised:
11
February
2009
Accepted:
28
March
2009
Published online:
3
May
2009
Inclusive energy distributions for light charged particles (p , d , t and 
have been measured in the 20Ne (158, 170, 180, 200 MeV) + 12C
reactionsintheangularrange$10°$ - - $50°$.Exclusivelight-charged-particleenergydistributionmeasurementswerealsodoneforthesamesystemat158 MeVbombardingenergybyin - planelightchargedparticle - - fragmentcoincidence.Pre - equilibriumcomponentshavebeenseparatedoutfromprotonenergyspectrausingthemovingsourcemodelconsideringtwosources.ThedatahavebeencomparedwiththepredictionsofthestatisticalmodelcodeCASCADE.Ithasbeenobservedthatsignificantdeformationeffectswereneededtobeintroducedinthecompoundnucleusinordertoexplaintheshapeoftheevaporated$d$,$t$energyspectra.Forprotons, evaporatedenergyspectrawereratherinsensitivetonucleardeformation, thoughangulardistributionscouldnotbeexplainedwithoutdeformation.Thedecaysequenceofthehot$32S$nucleushasbeeninvestigatedthroughexclusivelight - - charged - particlemeasurementsusingthe$20Ne$$(158 MeV) + $12C
reaction. Information on the sequential decay chain has been extracted through a comparison of the experimental data with the predictions of the statistical model. It is observed from the present analysis that exclusive light-charged-particle data may be used as a powerful tool to probe the decay sequence of hot light compound systems.
PACS: 24.60.Dr Statistical compound-nucleus reactions – / 25.70.Pq Multifragment emission and correlations – / 25.70.Jj Fusion and fusion-fission reactions – / 25.70.Gh Compound nucleus –
© SIF, Springer-Verlag Berlin Heidelberg, 2009
