Program - Brookhaven National Laboratory

usually neglected or very poorly taken into account, that have been proved to be important at low incident
energies [2], are appropriately analyzed through the Coupled-Reaction Channels formalism using the
FRESCO code[6]. A particular note should concern the (d,t) pick-up contribution to the total (d,t) activation
cross section at low energies, between its threshold and the (d,dn) and (d,p2n) reaction thresholds
leading to the same residual nucleus. All these BU and direct processes are also taken into account above
the Coulomb barrier, where the PE and CN reaction mechanisms become important and are accounted for
codes TALYS [7] and STAPRE-H [8]. Particularly, a consistent local parameter set was involved within
the detailed analysis carried out using the code STAPRE-H. The overall agreement between the measured
data and model calculations validates the theoretical approach of the various deuteron interactions while
the comparison to the global predictions [9] underlines the effects of overlooking the BF enhancement as
well as the stripping and pick-up processes. However, while the theoretical framework is already settled for
stripping, pick-up, PE, and CN, an increased attention should be paid to BU description, and especially
to its inelastic component. The complementary experimental studies requested by the improvement of this
status are pointed out too.
[1] M. Avrigeanu et al., Fus. Eng. Design 84, 418 (2009). [2] P. Bém et al., Phys. Rev. C 79, 044610
(2009); E. ˇ Simečkováet al., Phys. Rev. C 84, 014605 (2011). [3] M. Avrigeanu, V. Avrigeanu, and A. J.
Koning, Phys. Rev. C 85, 034603 (2012). [4] M. Avrigeanu and A. M. Moro, Phys. Rev. C 82, 037601
(2010). [5] C. Kalbach Walker, www.tunl.duke.edu/publications/tunlprogress/2003/ . [6] I. J. Thompson,
Comput. Phys. Rep. 7, 167 (1988); v. FRES 2.3 (2007). [7] A. J. Koning, S. Hilaire, and M. C. Duijvestijn,
http://www.talys.eu/home/. [8] M. Avrigeanu and V. Avrigeanu, News NEA Data Bank 17, 22
(1995). [9] A. J. Koning and D. Rochman, http://www.talys.eu/tendl-2011/.
JC 4 11:40 AM
Application of the Continuum Discretized Coupled Channels Method to Nucleon-Induced
Reactions on 6,7 Li for Energies up to 150 MeV
Hairui Guo, Kohei Nagaoka, Yukinobu Watanabe
Department of Advanced Energy Engineering Science, Kyushu University
Takuma Matsumoto, Masanobu Yahiro
Department of Physics, Kyushu University
Kazuyuki Ogata
Research Center for Nuclear Physics, Osaka University
In fusion technology, lithium is an important element relevant to not only a tritium breeding material in
DT fusion reactors but also a target material in the intense neutron source of IFMIF. The accurate nuclear
data of nucleon induced reactions on 6,7 Li are currently required for incident energies up to 150 MeV. Since
6 Li and 7 Li can easily break up like 6 Li → d + α and 7 Li → t + α, systematic understanding of the breakup
reaction mechanism is also an interesting and meaningful subject from the viewpoint of nuclear physics.
Therefore, the study of nucleon induced reactions on 6,7 Li is not only of practical value but also of theoretical
significance. The nucleon induced reactions on 6,7 Li are analyzed systematically with the Continuum
Discretized Coupled Channels (CDCC) method [1,2]. 6 Li and 7 Li are considered as d+α and t+α cluster,
respectively. Their discretized internal wave functions are obtained by the pseudostate method [3,4] with
the interactions as Gaussian forms [5]. The diagonal and coupling potentials between nucleon and 6,7 Li are
obtained by folding complex Jeukenne-Lejeune-Mahaux (JLM) effective nucleon-nucleon interaction with
the transition density of the corresponding discretized coupled states. The parameters of JLM interaction
are determined finally so as to reproduce experimental data well. The neutron total cross sections, the
proton reaction cross sections, the neutron and proton elastic and inelastic scattering angular distributions,
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