[인문]X-RAY 차폐재료[X-ray radiation shielding materials]
- 최초 등록일
- 2007.06.19
- 최종 저작일
- 2007.01
- 11페이지/
한컴오피스
- 가격 1,000원
![할인쿠폰받기](/images/v4/document/ico_det_coupon.gif)
목차
Overview
Neutron Radiation Shielding
Gamma-Ray Shielding
X-ray radiation shielding materials
Heavy materials
Tungsten loaded polymer, steel, Concrete
Lead glass:
Radiation Shielding Windows
Dry Windows
Oil Filled Windows
Al2O3 amorphous
CARBON NANOTUBE POLYMER
Conclusion
본문내용
Overview
Shielding design is relatively straightforward depending upon the type of radiation (gamma, neutron, alpha, beta). For example, when considering the reactor core, it is first necessary to slow down the fast neutrons (those not directly absorbed) coming from the core to thermal energy by utilizing appropriate neutron attenuating shielding materials that are properly arranged. This slowing down process is mostly caused by collisions that slow the neutrons to thermal energy. The thermal neutrons are then absorbed by the shielding material. All of the gamma rays in the system, both the gamma rays leaving the core and the gamma rays produced by neutron interactions within the shielding material have to be attenuated to appropriate levels by utilizing gamma ray shielding materials that are also properly arranged. The design of these radiation shields and those used to attenuate radiation from any radioactive source depend upon the location, the intensity, and the energy distribution of the radiation sources, and the permissible radiation levels at positions away from these sources. we will discuss the materials used to attenuate neutron, gamma, beta, and alpha radiation.
...
참고 자료
Reference:[1][http://www.tpub.com/doematerialsci/materialscience54.htm
[2][http://trshare.triumf.ca/~safety/EHS/rpt/rpt_7/node17.html]
[http://hps.org/documents/shielding_of_gamma_radiation.pdf]
[3][http://neutra.web.psi.ch/publication/Neutron_Imaging_e_Nutzer.pdf]
[4][http://www.buyusa.gov/europeanunion/leadshielding.pdf]
[5][http://www.lenntech.com/Glass.htm]
[6][http://www.premiertechnology.cc/premier/GlassLearning.cfm]
[7][http://uweb.cas.usf.edu/~harmon/pdfprojects/CarbonNanotubePolymerComposites.pdf]
[8][http://adsabs.harvard.edu/abs/1984ibmm.confR....W]
[9][http://adsabs.harvard.edu/abs/1989reic.rept.....S]