High resolution measurement of bragg cut-off in beryllium

Thaper, C. L. ; Goyal, P. S. ; Dasannacharya, B. A. (1984) High resolution measurement of bragg cut-off in beryllium Pramana - Journal of Physics, 23 (3). pp. 313-319. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/23/3/313-31...

Related URL: http://dx.doi.org/10.1007/BF02846574


Bragg cut-off for (1010) plane of polycrystalline beryllium of various lengths of 300 and 116 K has been measured with an energy resolution of 5 μeV. The natural width of the cut-off is 12.5±1.5 μeV, independent of temperature and length of beryllium and also of physical characteristics and certain metallurgical treatments of the powder. Such blocks of beryllium would be suitable for designing a ΔT-window spectrometer with resolution 20 μeV. Bragg cut-offs corresponding to (0002) and (1010) planes of beryllium have been separated for the first time. These can also be used for producing additional energy windows in a ΔT-window spectrometer, thus increasing its efficiency.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Neutrons; Beryllium; Bragg Cut-off; High Resolution Crystal Spectrometer
ID Code:10167
Deposited On:03 Nov 2010 04:19
Last Modified:16 May 2016 19:50

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