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Phenomenological systematics of the (d,p) cross sections A.V.Ignatyuk Institute of Physics and Power Engineering, Obninsk, Russia. DWBA description of the double deferential cross sections; DWBA calculations of the integral (d ,p) cross sections;
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Phenomenological systematics of the (d,p) cross sectionsA.V.IgnatyukInstitute of Physics and Power Engineering, Obninsk, Russia • DWBA description of the double deferential cross sections; • DWBA calculations of the integral (d,p) cross sections; • Empirical approximation of the (d,p) cross sections with the ALICE-D and EMPIRE-D codes; • Phenomenological systematics of the (d,p) cross sections; • Structure effects for the enhancement coefficients; • Conclusions. 3d CRP Meeting on FENDL-3, Vienna, 6-9 December 2011
48Ca(d,p): experimental data and the corresponding DWBA description W.D.Metz, W.D.Calender, C.R.Bockelman. Phys. Rev., C12 (1975) 827
48Ca(d,p): experimental data and the DWBA descriptions for 9th and 10th levels W.D.Metz, W.D.Calender, C.R.Bockelman. Phys. Rev., C12 (1975) 827
DWBA description of the integral (d,p) cross sections for 48Ca and 50Cr
Description of the (d,p) and (d,t) cross sections with the ALICE-D code The simple Kalbach formula was used: where C=3800, Vaisthe potential well depth, gN is the single-particle level density for neutrons and K is the adjusted parameters. This parameter should be energy dependent to describe the available experimental data !
Experimental data for the 197Au(d,p)198gAu crosssection in comparison with various calculations
Description of the (d,p) cross sections with the ALICE-D code
Phenomenological systematics The analytical function for the description of experimental data was accepted in the following form: where the factor before the square brackets defines the low-energy increasing part of the (d,p) cross section and the terms in the square brackets characterize the decreasing part. The parameter b determines the effective threshold of the (d,p) reaction and it should be close to the height of the Coulomb barrier The mean value of the radius parameter estimated from the experimental data analysis is reff=1.985±0.045 fm. b.
Experimental data for the 59Co(d,p) reaction compared with various calculations
Experimental data for the 197Au(d,p) reaction compared with various calculations
Parameter values estimated from the analysis of experimental data
Experimental data for the 141Pr(d,p) reaction compared with various calculations
Experimental data for the 181Ta(d,p) reaction compared with various calculations
Optimal parameter estimated from the analysis of the available experimental data. Other parameters: c=.75 MeV, a2=0.848, d1=7.1, d2=35 MeV
Conclusions: For the deuteron induced reactions the TENDL-2010 evaluations essentially underestimate the (d,p) reaction cross sections for the most of nuclei. There are also unphysical jumps of the cross sections at low energies. So, the corresponding sections of the TENDL-2010 files should certainly be corrected in the process of the FENDL-3D library formation. The phenomenological systematics of the (d,p) cross sections, proposed in the present report, can be recommended as an optimal evaluation of such data for all nuclei and the whole energy region.
Empirical estimation of the (d,t)dir cross sections for 169Tm