Multinucleon transfer reactions for the {sup 28}Si+{sup 90,94}Zr systems in the region below and near the Coulomb barrier

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.054607· OSTI ID:21502478

Kalkal, Sunil; Mandal, S; Garg, Ritika; Saxena, Mansi; Goyal, Savi; Verma, S; Kumar, Suresh; Singh, R ^[1]; Madhavan, N; Jhingan, A; Nath, S; Gehlot, J; Mohanto, Gayatri ^[2]; Prasad, E ^[3]; Sandal, Rohit; Behera, B R ^[4]; Pramanik, U D ^[5]; Sinha, A K ^[6]

---

1. Department of Physics and Astrophysics, University of Delhi, Delhi (India)
2. Inter University Accelerator Centre, New Delhi (India)
3. Department of Physics, Calicut University, Kerala (India)
4. Department of Physics, Panjab University, Chandigah (India)
5. Saha Institute of Nuclear Physics, Kolkata (India)
6. UGC-DAE Consortium for Scientific Research, Kolkata (India)

Measurements on multinucleon transfer reactions for {sup 28}Si+{sup 90,94}Zr systems were performed at sub- and near-barrier energies. The fact that {sup 90}Zr has a closed neutron shell (N = 50) and {sup 94}Zr has four neutrons outside the closed shell, allows us to investigate the effects of shell closure and pairing correlation on multinucleon transfer mechanism. The experiment was performed with pulsed {sup 28}Si beam using the Heavy Ion Reaction Analyzer (HIRA) at Inter University Accelerator Centre (IUAC), New Delhi. Based on the Q-value considerations, it turned out that pickup channels were neutron transfer whereas stripping channels were proton transfer. For the {sup 28}Si+{sup 90}Zr system, the values of the slope parameter for two-neutron pickup turned out to be less than that for one-neutron pickup. The values of the slope parameter were almost the same for two-, three-, and four-neutron pickup channels in the case of the {sup 28}Si+{sup 94}Zr system. The transfer probabilities in the case of the {sup 28}Si+{sup 94}Zr system were much larger than those for the {sup 28}Si+{sup 90}Zr system, further supporting the fact that there is a correlation between the transfer channels and sub-barrier fusion cross-section enhancement. An odd-even staggering was observed in the extracted transfer probabilities at the barrier radius implying the role of pairing correlation in transfer reactions.

• OSTI ID: 21502478
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevC.83.054607; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
BEAMS
CORRELATIONS
COULOMB FIELD
CROSS SECTIONS
HEAVY ION REACTIONS
MULTI-NUCLEON TRANSFER REACTIONS
NEUTRON TRANSFER
NEUTRONS
PROBABILITY
Q-VALUE
SILICON 28 REACTIONS
STRIPPING
ZIRCONIUM 90 TARGET
ZIRCONIUM 94 TARGET
BARYONS
DIRECT REACTIONS
ELECTRIC FIELDS
ELEMENTARY PARTICLES
ENERGY
FERMIONS
HADRONS
NUCLEAR REACTIONS
NUCLEONS
TARGETS
TRANSFER REACTIONS