Two-Neutron Transfer Induced by 6He Nuclear Beam at 25MeV/u on a 9Be Target
- Received Date: 2003-04-16
- Accepted Date: 1900-01-01
- Available Online: 2004-03-05
Abstract: n-and 2n-transfer reaction products 10Be and 11Be at large c.m. angles were measued in a specially designed set-up for the bombardment of 9Be by 6He at 150MeV. In total 371 10Be and 511Be events, corresponding to 1n-and 2n-transfer respectively were identified. The experimental differential cross-sections obtained are 0.11±0.02mb/sr(θcm≈137.4°) and 1.0±0.7μb/sr(θcm≈133.4°) for 1n- and 2n-transfer, respectively. Such results indicate that the differential cross-section of 1n-transfer is about 100 times higher than that of 2n-transfer at large c.m. angle in the reaction studied. Calculation using zero range Distorted Wave Born Approximation(DWBA) for 6He under 5He-n and α-2n two-cluster models are performed and discussed.