نتایج جستجو برای: carbon ion beam

تعداد نتایج: 574213  

ژورنال: سنجش و ایمنی پرتو 2017

In this paper design and simulation of an optimized accelerator tube is presented for the production of light charged particles up to energy of 2 MeV. Geometry of the accelerator tube electrodes was simulated based on the Van De Graaff accelerator tubes of Atomic Energy Organization by SIMION 7.0, Virtual Device and SIMION Toolkit codes. In accelerator tube, the extracted ion beam from the ion ...

Journal: :Physical Review Accelerators and Beams 2019

2015
Benjamin J. Blyth Shizuko Kakinuma Masaaki Sunaoshi Yoshiko Amasaki Shinobu Hirano-Sakairi Kanae Ogawa Ayana Shirakami Yi Shang Chizuru Tsuruoka Mayumi Nishimura Yoshiya Shimada Roberto Amendola

Monitoring mice exposed to carbon ion radiotherapy provides an indirect method to evaluate the potential for second cancer induction in normal tissues outside the radiotherapy target volume, since such estimates are not yet possible from historical patient data. Here, male and female B6C3F1 mice were given single or fractionated whole-body exposure(s) to a monoenergetic carbon ion radiotherapy ...

Journal: :Applied Physics Letters 2023

We demonstrate optical reflectivity and Raman responses of graphite microstructures as a function light polarization when the incident is applied perpendicular to material's stacking direction (c-axis). For this, we employed novel nanoribbons with edges polished through ion-beam etching. In this unique configuration, strong dependence D, G, 2D modes observed. At same time, polarized measurement...

1997
J. Schwan H. Ehrhardt P. Becker S. R. P. Silva

Amorphous carbon films with high sp content were deposited by magnetron sputtering and intense argon ion plating. Above a compressive stress of 13 GPa a strong increase of the density of the carbon films is observed. We explain the increase of density by a stress-induced phase transition of sp configured carbon to sp configured carbon. Preferential sputtering of the sp component in the carbon f...

Journal: :Journal of radiation research 2007
Satoru Endo Masashi Takada Yoshihiko Onizuka Kenichi Tanaka Naoko Maeda Masayori Ishikawa Nobuyuki Miyahara Naofumi Hayabuchi Kiyoshi Shizuma Masaharu Hoshi

Microdosimetric single event spectra as a function of depth in a phantom for the 290 MeV/nucleon therapeutic carbon beam at HIMAC were measured by using a tissue equivalent proportional counter (TEPC). Two types of geometries were used: one is a fragment particle identification measurement (PID-mode) with time of flight (TOF) method without a backward phantom, and the other is an in-phantom mea...

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