http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Jeewan Sharma (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Experimental investigation of effective atomic numbers for some binary alloys
Renu Sharma,J.K. Sharma,Taranjot Kaur,Tejbir Singh,Jeewan Sharma,Parjit S. Singh 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.7
In the present work, the gamma ray backscattering technique was used to determine the effective atomic numbers for certain binary alloys. With the help of a muffle furnace, the binary alloys were synthesized using the melt quenching technique with different compositions of 82Pb, 50Sn, and 30Zn. The intensity distribution of backscattered photons from radioactive isotope 22Na (511 keV) was recorded with the help of GAMMARAD5 [76 mm × 76 mm NaI(Tl) scintillator detector] and analyzed as a function of both atomic number and thickness of the target material. The effective atomic numbers for the same binary alloys were also computed theoretically using the atomic to electronic cross-section method with the help of the mass attenuation coefficient database of WinXCom (2001). Good agreement was observed between theoretical and experimental results for the effective atomic numbers of all the selected alloys.
-
Extensive investigations of photon interaction properties for Zn x Te 100-x alloys
Harinder Singh,Jeewan Sharma,Tejbir Singh 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.8
An extensive investigation of photon interaction properties has been made for ZnxTe100-x alloys (wherex ¼ 5, 20, 30, 40, 50) to explore its possible use in sensing and shielding gamma radiations. The resultsshow better and stable response of ZnTe alloys for various photon interaction properties over the wideenergy range, with an additional benefit of ease in fabrication due to lower melting points of Zn and Te. Mass attenuation coefficient values show strong dependence on photon energy as well as composition. Effective atomic number has maximum value for Zn5Te95 and lowest for Zn50Te50 in the entire energyregion. The alloy sample with maximum Zeff shows minimal value of Ne and vice versa. Mean free pathfollows inverse trend as observed for mass attenuation coefficient. The exposure and energy absorptionbuildup factors depend upon photon energy, penetration thickness and composition (effective atomicnumber) of ZnxTe100-x alloys. It finds its application for sensing and shielding from highly energetic andhighly penetrating photons at sites where radioactive materials were used and visibility of material is nota big constraint. Further, energy down conversion property of ZnTe alloys with subsequent emission ingreen band suggests its potential use in sensing gamma photons.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
