[en] The theory of Faddev/AGS few body reaction frameworks is presented. A comparison with other reaction formalisms (DWBA, CDCC) is made. Sucesses and shortcomings of the scattering approaches for breakup are analysed. Some set of calculated reaction observales for resonant and nonresonant breakup are presented to obtain insight into the physics incorporated on the scattering approaches.

[en] The calculation of cross section for neutron and "9"4Zr nuclide collision has been done using the DWBA model and DWUCK-4 code. The optical model potential (OMP) parameters used for the calculation were based on the Becchetti-Greenlees, Rapaport as well as Walter-Guss versions. A Spectrum of total cross section has been resulted with incoming energy range of 1~35 MeV, and a spectrum of energy distribution of cross section has been resulted at the incoming energy of 15 MeV. The calculation result shows that the three OMPs give similar recommendations on cross section for the elastic reaction (n,n) curve, as well as inelastic reaction (n,n’). It is understood from the calculated energy distribution of cross section, that all those OMPs indicate the maximum cross section for the "9"4Zr(n,n) reaction, En = 15 MeV almost the same outgoing energy level, i.e. 7~8 MeV. (author)

[en] I revisit a longstanding question in quantum optics; when is the rotating wave approximation justified? In terms of the Jaynes–Cummings and Rabi models I demonstrate that the approximation in general breaks down in the adiabatic limit regardless of system parameters. This is explicitly shown by comparing Berry phases of the two models, where it is found that this geometrical phase is strictly zero in the Rabi model contrary to the non-trivial Berry phase of the Jaynes–Cummings model. The source of this surprising result is traced back to different topologies in the two models. (paper)

[en] Full text: Recommendations for future parameter libraries: 1. The existing parameter library should be updated, extended and corrected regularly based on the latest measurements, evaluations and theoretical studies by international collaborations (through CRPs or other activities). What parts of the parameter library to be updated and corrected should be taken into account in setting up the activity. 2. New parameters should be added according to the new mechanisms or approaches introduced in the nuclear reaction model code and the updated results from nuclear theory studies. 3. Information on the range of parameters, especially for nuclear reaction model parameters used for covariance evaluations and sensitivity studies of nuclear data should be recommended. The information which can be used for this purpose should be considered based on the nuclear reaction models such like OM, DWBA, H-F and exciton model, etc. which are popular in the nuclear reaction model codes. 4. The model parameters (global and local) and related information for the unstable nuclei model calculations should be recommended and the uncertainties from the parameters for the model calculations of unstable nuclei should be studied and analyzed. 5. If some parameter systematics could be provided, it would help the nuclear data evaluators and nuclear data users to perform the model calculations. 6. CRPs and collaborations should be considered to address the above items. (author)

[en] The second-order distorted wave Born approximation implementation of two-particle transfer direct reactions which includes simultaneous and successive transfer, properly corrected by non-orthogonality effects, is tested with the help of controlled nuclear structure and reaction inputs against data spanning the whole mass table, and showed to constitute a quantitative probe of nuclear pairing correlations. (review article)

[en] The equation of state (EOS) of nuclear matter is a very important ingredient in the study of nuclear properties, heavy ion collisions, neutron stars and supernova. Accurate assessment of the value of the incompressibility coefficient, K, of symmetric nuclear matter, which is directly related to the curvature of the EOS, is needed to extend our knowledge of the EOS in the vicinity of the saturation point. We review the current status of K as determined from experimental data on isoscalar giant monopole and dipole resonances (compression modes) in nuclei within the microscopic theory of mean-field-based random phase approximation

[en] The same approach is being used to calculate theoretically the cross-section of ⁸Be(n, γ)⁹Be by using two different theories, first order perturbation theory and finite range distorted wave Born approximation theory (FRDWBA). The main focus is on FRDWBA, where one can calculate photodisintegration cross-sections from the Coulomb breakup of projectile on some heavy target. The Coulomb dissociation cross-sections usually have a large value, so one can easily calculate photodisintegration cross-sections from those, and then by using the principle of detailed balance as mentioned above, one can calculate the radiative capture cross-sections. Here, the preliminary results for first order perturbation theory are presented, which are compared with data. The calculations with the FRDWBA are in progress

[en] The convergent close-coupling (CCC) method is applied to the calculation of electron-impact total ionisation cross-sections for H-, Na- and Mg-like ions. For low to intermediate charges the nonrelativistic CCC method is used. For higher charges a relativistic CCC implementation has been applied with a Breit or a Møller correction. Comparisons with the distorted wave Born approximations (DWBA) are often very good, even when electron exchange is very important. (author)

[en] A new method of grazing incidence X-ray absorption spectroscopy using an off-specular reflection geometry referred to as Yoneda-XAFS is presented. Using an asymmetric setup, with the detector centered at the Yoneda peak, this technique is sensitive to lateral heterogeneities which typically occur at surfaces or interfaces. The Yoneda-XAFS technique was used for the ex situ investigation of a sputter deposited thin gold films on a float glass substrate. The data analysis is done in the framework of the distorted wave Born approximation (DWBA)

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