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Matsuya, Yusuke; Kai, Takeshi; Sato, Tatsuhiko
Shototsu, 21(3), p.R008_1 - R008_8, 2024/11
Particle and Heavy Ion Transport code System PHITS is a Monte Carlo code that enables the simulation of the behavior of radiation using a computer. Since 2018, a track-structure mode has been developed that allows the simulation of each atomic interaction in liquid water, which is a main component of living organisms. This development has made it possible to perform high-spatial resolution radiation track-structure analysis on the DNA scale. Meanwhile, based on the spatial information of atomic interactions calculated in the track-structure mode, we have also succeeded in developing an analysis code that enables the estimate of the various types of DNA damage yields efficiently and with high accuracy. In this review, we introduce an overview of the track-structure mode and DNA damage estimation model implemented in the latest version of PHITS, and show examples of applications of PHITS in the field of life sciences.
Ishikawa, Norito; Taguchi, Tomitsugu*; Okubo, Nariaki
Shototsu, 18(3), p.43 - 55, 2021/05
Radiation damage mechanism in ceramics irradiated with swift heavy ions has been studied by using transmission electron microscopy (TEM). We introduce how the mechanisms are unveiled by our recent TEM studies.
Yamakawa, Koichiro
Shototsu, 17(5), p.86 - 101, 2020/09
no abstracts in English
Nishida, Akemi
Nihon Kenchiku Gakkai Shimpojiumu "Kenchikubutsu O Torimaku Shogeki Mondai, Jinsai (shototsu, Bakuhatsu), Tensai (Tsunami, Tatsumaki), Tero Eno Sonae", p.7 - 22, 2015/12
The guideline for impulsive load as explosion and impact is not specified yet in architectural field. This presentation corresponds to the contents of the book titled "Introduction to Shock-Resistant Design of Buildings" which made towards the impact design guideline. Some design criteria examples are presented to illustrate the applicability of the tentative guideline for impulsive loads. Two buildings - a steel frame and a reinforced concrete frame building structures are selected. The idea has been shown in this presentation are those that can be applied to nuclear facilities.
Matsubara, Akihiro
Shototsu, 12(4), P. 126, 2015/07
no abstracts in English
Kurosaki, Yuzuru
Shototsu, 12(4), p.114 - 125, 2015/07
no abstracts in English
Tsubouchi, Masaaki
Shototsu, 12(2), p.36 - 54, 2015/03
A novel design for a contact grating device with an incorporated Fabry-Perot resonator is proposed for high-power terahertz light (THz) generation. We deposited a multilayer consisting of Ta
O
and AlO
on a magnesium-doped stoichiometric LiNbO substrate and fabricated grating grooves on the outermost layer. The multilayer was designed such that conditions for a Fabry-Perot resonator were satisfied for light diffracted by the grating. Consequently, the diffraction efficiency was enhanced by the resonator. The diffraction efficiency of the fabricated device was 71%. THz light generation was also demonstrated with the contact grating device.
Moribayashi, Kengo
Shototsu, 11(3), p.73 - 91, 2014/05
no abstracts in English
Yokoya, Akinari; Ukai, Masatoshi*; Oka, Toshitaka*; Kai, Takeshi; Watanabe, Ritsuko; Fujii, Kentaro
Shototsu, 11(2), p.33 - 39, 2014/03
no abstracts in English
Ichihara, Akira
Shototsu, 11(1), P. 5, 2014/01
With the recent progress of developments of laser devices, pulses with the intensity higher than 100 MeV/cm
have been generated in the THz region. As an application of the THz pulses, there is rotational excitation of a diatomic molecule by a frequency comb. This article mentions the excitation process briefly. First, interaction between the molecule and the laser field is introduced. The frequency comb is given in a form of a periodic delta function. Then we explain that the molecule can be excited into a high rotational state by tuning spectral frequencies of the comb to rotational transition frequency of the molecule. Finally, the computational result for the LiCl molecule is given in order to demonstrate the rotational excitation process induced by the frequency comb.
Moribayashi, Kengo
Shototsu, 10(2), p.43 - 45, 2013/03
no abstracts in English
Moribayashi, Kengo
Shototsu, 9(4), p.8 - 13, 2012/07
no abstracts in English
Kitazawa, Shinichi
Genshi Shototsu Sakyura, (174), p.12 - 14, 1997/09
no abstracts in English
