Biennial Report 2005-2007 - Saha Institute of Nuclear Physics

14 Biennial Report 2005-07MeV and photo-induced pi pi production at incident beam energies of 400-460 MeV.Oliver Buss†, Luis Alvarez-Rusox†, Pascal Muehlich†, Ulrich Mosel†, Radhey ShyamTheo1.3.1.6 Astrophysical S 17 (0) factor from a measurement of d(7Be,8B)n reaction atE c.m. = 4.5 MeVAngular distribution measurements of 2 H( 7 Be, 7 Be) 2 H and 2 H( 7 Be, 8 B)n reactions at E c.m. ∼ 4.5MeV were performed to extract the astrophysical S 17 (0) factor using the asymptotic normalizationcoefficient (ANC) method. For this purpose a pure, low emittance 7 Be beam was separated from theprimary 7 Li beam by a recoil mass spectrometer operated in a novel mode. A beam stopper at 0 ◦allowed the use of a higher 7 Be beam intensity. Measurement of the elastic scattering in the entrancechannel using kinematic coincidence, facilitated the determination of the optical model parametersneeded for the analysis of the transfer data. The present measurement significantly reduces errors inthe extracted 7 Be(p,γ) cross section using the ANC method. We get S 17 ∼ (0) ∼=∼20.7∼ ± ∼2.4eV ∼ b.JJ Das†, VM Datar†, P Sugathan†, N Madhavan†, PV Madhusudhana Rao†, A Jhingan†, A Navin†,SK Dhiman†, S Barua†, S Nath†, T Varughese†, AK Sinha†, R Singh†, A Ray†, DL Sastry†, RGKulkarni†, R ShyamTheo1.3.2 Nuclear Structure1.3.2.1 Beta decay rates of nuclei with 65