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Analysis of the $sup 12$C($sup 6$Li,$alpha$$)$$sup 14$N reaction for E ($sup 6$Li) = 33 MeV

Journal Article · · Phys. Rev., C, v. 12, no. 6, pp. 1918-1926
OSTI ID:4101377
; ;
The $sup 12$C($sup 6$Li,$alpha$$)$$sup 14$N reaction to the first eight T = 0 states was studied at E ($sup 6$Li) = 33 MeV in the angular range 12.5degree less than or equal to theta less than or equal to 165degree. The measurements for the positive parity states in $sup 14$N also included the angular range 2.5degree--12.5degree. Calculations for the angular distributions were done within the framework of the distorted-wave Born approximation (DWBA) with three different prescriptions: (1) zero range two particle transfer, (2) finite range deuteron cluster transfer, and (3) finite range two particle transfer, which included a full microscopic description of the two nucleon wave function. None of the three types of DWBA calculations could reproduce the data. Consequently, the possiblity of multistep contributions was investigated by computing the spectroscopic amplitudes for transitions from the 2$sup +$ first excited state in $sup 12$C to the first two states in $sup 14$N. It was found that the transfer strengths from the $sup 12$C (4.43 MeV) to the $sup 14$N (0.00 MeV) and $sup 14$N (3.95 MeV) J/sup pi/ = 1$sup +$ levels are larger than those from the $sup 12$C ground state. These results coupled with previous results showing that the $sup 12$C($sup 6$Li,$alpha$$)$$sup 14$N reaction is not compound at this energy imply that multistep mechanisms may be very important. (AIP)
Research Organization:
Physics Department, Florida State University, Tallahassee, Florida 32306
NSA Number:
NSA-33-018890
OSTI ID:
4101377
Journal Information:
Phys. Rev., C, v. 12, no. 6, pp. 1918-1926, Journal Name: Phys. Rev., C, v. 12, no. 6, pp. 1918-1926; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

*CARBON 12 TARGET-- LITHIUM 6 REACTIONS
*CARBON 12-- LITHIUM 6 REACTIONS
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ALPHA PARTICLES
ANGULAR DISTRIBUTION
DWBA
MEV RANGE 10-100
N68331 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
6 <= A <= 19--Energy Levels & Transitions
N68351* --Physics (Nuclear
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6 <= A <= 19--Nuclear Reactions & Scattering
TWO-NUCLEON TRANSFER REACTIONS