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Exact finite-range microscopic calculations for heavy-ion induced two-nucleon transfer reactions
C-404 Computer Physics Communication 12 (1976) 293-303 © North-Holland publishing Company
EXACT FINITE-RANGE MICROSCOPIC CALCULATIONS FOR HEAVY-ION INDUCED TWO-NUCLEON TRANSFER REACTIONS * D.H. F E N G , B.T. KIM, T. U D A G A W A , T. T A M U R A Department o/Physics, University o/Texas, Austb~, Texas 78712, USA and K.S. LOW Jabatan Fizik, Universiti Malaya
, Kuala Lumpur, Malaysia
Received 25 October 1976
PROGRAM SUMMARY
Title o/program: SATTNT-FOR-EFR-MICRO-DWBA Catalogue number: ABMU Computer: CDC 6600; Installation: University of Texas Computation Center Operating system: UT2D Programming language used: FORTRAN IV
Keywords: Nuclear, heavy ions, direct nuclear reactions, exact-finite-range microscopic DWBA, form factor, stripping, pickup, cross section, elastic scattering, Schroedinger equation, EFR-MICRO-DWBA. Nature o1 physical problem The program SATTNT calculates the form factor for twonucleon transfer reactions. The approach adopted in this program is the exact-finite-range microscopic theory [ 1 ]. The created form factor is to be used, for instance, in the MARS-1 program [2] to calculate the DWBA cross sections.
High speed store required: 45248 words Number o/bits per word: 60 Overlay structure: yes Number o/magnetic tapes required: 5 Other peripherals used: Card reader, line printer, punch Number o/cards in combined program and test deck: 3158
* Work supported in part by the US Energy Research and Development Administration.
Method of solution The radial part of the wave functions of the bound nucleons are expanded in terms of oscillator functions and then Moshinsky transformed by using a program developed by Feng and Tamura [3]. To evaluate the kernels of EFR form factors, one-dimensional integrals are carried out by Gaussian quadrature, introducing a specific technique [2] so as to minimize the number of quadrature points. Throughout the program interpolation and other techniques [2] are used so that an EFR calculation can be performed reasonably quickly. Restrictions on the complexity of the program Restrictions on the size of the calculation come about mostly from the number allowed for the pairs (LI, L2) , where L l and L 2 are orbital angular momenta of the center-of-mass motion of the two transferred nucleons, respectively, in the donor and acceptor nuclei. However, only a very small number of pairs actually contribute to the reaction and the storage presently assigned will meet the needs of most practical calculations.
C-405 294
D.H. Feng et al. / Two-nucleon transfer reactions
References [ 11 D.H. Feng, T. Udagawa and T. Tamura, Nucl. Phys., A274 (1976) 262. 12] T. Tamura and K.S. Low, Comput. Phys. Commun. 8 (1974) 349. [3] D.H. Feng and T. Tamura, Comput. Phys. Commun. 10 (1975) 87.
EXACT FINITE-RANGE MICROSCOPIC CALCULATIONS FOR HEAVY-ION INDUCED TWO-NUCLEON TRANSFER REACTIONS * D.H. F E N G , B.T. KIM, T. U D A G A W A , T. T A M U R A Department o/Physics, University o/Texas, Austb~, Texas 78712, USA and K.S. LOW Jabatan Fizik, Universiti Malaya
, Kuala Lumpur, Malaysia
Received 25 October 1976
PROGRAM SUMMARY
Title o/program: SATTNT-FOR-EFR-MICRO-DWBA Catalogue number: ABMU Computer: CDC 6600; Installation: University of Texas Computation Center Operating system: UT2D Programming language used: FORTRAN IV
Keywords: Nuclear, heavy ions, direct nuclear reactions, exact-finite-range microscopic DWBA, form factor, stripping, pickup, cross section, elastic scattering, Schroedinger equation, EFR-MICRO-DWBA. Nature o1 physical problem The program SATTNT calculates the form factor for twonucleon transfer reactions. The approach adopted in this program is the exact-finite-range microscopic theory [ 1 ]. The created form factor is to be used, for instance, in the MARS-1 program [2] to calculate the DWBA cross sections.
High speed store required: 45248 words Number o/bits per word: 60 Overlay structure: yes Number o/magnetic tapes required: 5 Other peripherals used: Card reader, line printer, punch Number o/cards in combined program and test deck: 3158
* Work supported in part by the US Energy Research and Development Administration.
Method of solution The radial part of the wave functions of the bound nucleons are expanded in terms of oscillator functions and then Moshinsky transformed by using a program developed by Feng and Tamura [3]. To evaluate the kernels of EFR form factors, one-dimensional integrals are carried out by Gaussian quadrature, introducing a specific technique [2] so as to minimize the number of quadrature points. Throughout the program interpolation and other techniques [2] are used so that an EFR calculation can be performed reasonably quickly. Restrictions on the complexity of the program Restrictions on the size of the calculation come about mostly from the number allowed for the pairs (LI, L2) , where L l and L 2 are orbital angular momenta of the center-of-mass motion of the two transferred nucleons, respectively, in the donor and acceptor nuclei. However, only a very small number of pairs actually contribute to the reaction and the storage presently assigned will meet the needs of most practical calculations.
C-405 294
D.H. Feng et al. / Two-nucleon transfer reactions
References [ 11 D.H. Feng, T. Udagawa and T. Tamura, Nucl. Phys., A274 (1976) 262. 12] T. Tamura and K.S. Low, Comput. Phys. Commun. 8 (1974) 349. [3] D.H. Feng and T. Tamura, Comput. Phys. Commun. 10 (1975) 87.