We studied the competition between fusion and quasifission by populating the compound nucleus (CN) 210Rn through different entrance channels - 16O+194Pt and 30Si+180Hf, at energies around the Coulomb barrier. The larger widths of the fission fragment mass distribution in the 30Si+180Hf reaction which could not be explained by using transition state models, indicated the onset of quasifission in this reaction. Further, the evaporation residues (ERs) produced in these reactions were measured using the gas-filled recoil mass separator HYRA at IUAC. The measurements showed reduced ER cross sections for the 30Si+180Hf reaction when compared with that of 16O+194Pt at similar excitation energies, confirming the presence of quasifission in the 30Si+180Hf reaction. The experimental results are analysed using the dinuclear system (DNS) and statistical models to understand the possible influence of potential energy surfaces (PES) and different entrance channel conditions in heavy ion fusion reactions.

Probing quasifission in reactions forming 210Rn nucleus

Giardina, G.
Membro del Collaboration Group
;
Mandaglio, G.
Membro del Collaboration Group
;
2016

Abstract

We studied the competition between fusion and quasifission by populating the compound nucleus (CN) 210Rn through different entrance channels - 16O+194Pt and 30Si+180Hf, at energies around the Coulomb barrier. The larger widths of the fission fragment mass distribution in the 30Si+180Hf reaction which could not be explained by using transition state models, indicated the onset of quasifission in this reaction. Further, the evaporation residues (ERs) produced in these reactions were measured using the gas-filled recoil mass separator HYRA at IUAC. The measurements showed reduced ER cross sections for the 30Si+180Hf reaction when compared with that of 16O+194Pt at similar excitation energies, confirming the presence of quasifission in the 30Si+180Hf reaction. The experimental results are analysed using the dinuclear system (DNS) and statistical models to understand the possible influence of potential energy surfaces (PES) and different entrance channel conditions in heavy ion fusion reactions.
File in questo prodotto:
File Dimensione Formato  
INPC2016_194.pdf

accesso aperto

Descrizione: PoS(INPC2016)194
Tipologia: Versione Editoriale (PDF)
Dimensione 276.23 kB
Formato Adobe PDF
276.23 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/3119667
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact