4,860 research outputs found
<Articles>Simple Questions in Japanese Are Not That Simple(<Syntax>)
1. Introduction This article is about Japanese question. It serves to complement a theory that I developed elsewhere (Watanabe (2002)). I review the previous research in section 2 as a starting point. ..
Recent development of CDCC
This paper shows a brief review on CDCC and the microscopic reaction theory
as a fundamental theory of CDCC. The Kerman-McManus-Thaler theory for
nucleon-nucleus scattering is extended to nucleus-nucleus scattering. New
development of four-body CDCC is presented. An accurate method of treating
inclusive reactions is presented as an extension of CDCC and the Glauber model.Comment: 15 pages, 7 figures, 2 tables, the proceedings of the Dynamics and
Correlations in Exotic Nuclei (DCEN2011
The Central Gas Systems of Early-Type Galaxies Traced by Dust Feature: Based on the HST WFPC2 Archival Images
We investigated the central gas systems of E/S0 galaxies by making use of the
WFPC2 images of the Hubble Space Telescope archive. We searched the gas systems
that were traced by the dust with a new method of making color excess images in
F555W - F814W (V-I). Out of 25 sample galaxies, we detected gas system in 14
galaxies. The dust was newly detected in two galaxies that were thought to
contain no dust based on single band, pre-refurbishment data. The full extents
of the gas systems are 0.1 to 3.5 kpc, and the masses of the gas, log M(gas)
[M(solar)], are 4.2 to 7.2. The AGN activity is well correlated with existence
of the gas systems. None of galaxies without the gas systems show the AGN
activity. On the other hand, some galaxies with the gas systems show the AGN
activity; optical AGN activities are shown in 5 out of 11 galaxies of which
AGNs are optically studied, and radio activities are shown in 6 out of 14
galaxies. This shows that the AGN activity is driven with the gas system.Comment: gzipped tarred file containing 7 files: Tomita.tex (main text, needs
aaspp4.sty), Tomita.tab[1,2].tex (tables, need aj_pt4.sty), Tomita.fig
[1a,1b,1c,2].ps (PS figures). To be appeared in AJ, Vol.120, No.1 (July 2000
Recent Progress in CdTe and CdZnTe Detectors
Cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) have been
regarded as promising semiconductor materials for hard X-ray and Gamma-ray
detection. The high atomic number of the materials (Z_{Cd} =48, Z_{Te} =52)
gives a high quantum efficiency in comparison with Si. The large band-gap
energy (Eg ~ 1.5 eV) allows us to operate the detector at room temperature.
However, a considerable amount of charge loss in these detectors produces a
reduced energy resolution. This problem arises due to the low mobility and
short lifetime of holes. Recently, significant improvements have been achieved
to improve the spectral properties based on the advances in the production of
crystals and in the design of electrodes. In this overview talk, we summarize
(1) advantages and disadvantages of CdTe and CdZnTe semiconductor detectors and
(2) technique for improving energy resolution and photopeak efficiencies.
Applications of these imaging detectors in future hard X-ray and Gamma-ray
astronomy missions are briefly discussed.Comment: 9 pages, 15 figures, Based on the invited overview talk at 2000 IEEE
Nuclear Science Symposium (Lyon, France). will appear in IEEE N
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