Abstract

We developed a new neutron mirror made of Diamond-like carbon (DLC). DLC is a film of amorphous carbon that has characteristics of both diamond and graphite. We produced DLC mirrors by ionization deposition method which is one of the chemical vapor deposition (CVD). Generally, DLC made by CVD contents a few tens of percentages of hydrogen. It decreases the Fermi potential of the DLC coating because hydrogen has negative Fermi potential. In order to increase the Fermi potential of the coating, we deuterated the DLC by using deuterated benzene for the source gas. The characteristics of the deuterated DLC(DDLC) coating was evaluated by RBS, ERDA, x-ray reflectivity, AFM. As a result, DDLC coating has 243neV due to deuteration, which is the same level as Ni. The RMS of height of the DDLC was 0.6nm so that the DDLC coating can be applied for a focusing mirror or specular transportation of pulsed neutron. Besides, we also develop Hydrogen/Deuterium DLC multiple layer mirror. So far, 4 layers mirror has been succeeded.

Details

Title
Development of a new neutron mirror made of deuterated Diamond-like carbon
Author
Sakurai, Dai 1 ; Chiba, Junsei 1 ; Ino, Takashi 2 ; Kakusho, Nobunori 3 ; Kaneko, Naokatsu 2 ; Katayama, Ryo 4 ; Kitaguchi, Masaaki 5 ; Mishima, Kenji 6 ; Muto, Suguru 7 ; Ozeki, Kazuhide 8 ; Seki, Yoshichika 3 ; Shimizu, Hirohiko M 1 ; Yamashita, Satoru 6 ; Yoshioka, Tamaki 9 ; Nishimura, Daiki 1 

 Faculty of Science and Technology, Tokyo University of Science, Noda 278-8510, Japan 
 High Energy Accelerator Research Organization, Tsukuba 305-080, Japan 
 Institute of Physical and Chemical Research, Wako 351-0198, Japan 
 School of Science, The University of Tokyo, Tokyo 113-0033, Japan 
 Department of Physics, Nagoya University, Nagoya 464-8602, Japan; Center of Experimental Studies, Nagoya University, Nagoya 464-8602, Japan 
 International Center for Elementary Particle Physics, The University of Tokyo, Tokyo 113-0033, Japan 
 High Energy Accelerator Research Organization, Tsukuba 305-080, Japan; Deceased 
 School of Science, Ibaraki University, Hitachi 316-8511, Japan 
 Research Center for Advanced Particle Physics, Kyushu University, Fukuoka 812-8581, Japan 
Publication year
2014
Publication date
Jul 2014
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576704784
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.