Profile functions to reproduce Bragg reflection shapes observed by a time-of-flight single-crystal diffractometer installed at a coupled moderator pulsed neutron source in J-PARC

2013 ◽  
Vol 723 ◽  
pp. 128-135 ◽  
Author(s):  
Katsuaki Tomoyori ◽  
Katsuhiro Kusaka ◽  
Taro Yamada ◽  
Takaaki Hosoya ◽  
Takashi Ohhara ◽  
...  
Keyword(s):  
Single Crystal ◽  
Neutron Source ◽  
Bragg Reflection ◽  
Time Of Flight ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

scholarly journals Measurement of ultracold neutrons produced by using Doppler-shifted Bragg reflection at a pulsed-neutron source

1979 ◽  
Author(s):  
T.O. Brun ◽  
J.M. Carpenter ◽  
V.E. Krohn ◽  
G.R. Ringo ◽  
J.W. Cronin ◽  
...  
Keyword(s):  
Neutron Source ◽  
Bragg Reflection ◽  
Ultracold Neutrons ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

Electronically focused time-of-flight powder diffractometers at the intense pulsed neutron source

1989 ◽  
Vol 22 (4) ◽  
pp. 321-333 ◽  
Author(s):  
J. D. Jorgensen ◽  
J. Faber ◽  
J. M. Carpenter ◽  
R. K. Crawford ◽  
J. R. Haumann ◽  
...  
Keyword(s):  
High Resolution ◽  
Neutron Source ◽  
Rietveld Method ◽  
Time Of Flight ◽  
Scattering Angle ◽  
Wide Range ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

Two time-of-flight powder diffractometers have operated at the Intense Pulsed Neutron Source (IPNS) since August 1981. These instruments use dedicated microcomputers to focus time-of-flight events so that data from different detectors can be summed into a single histogram. Thus, large multidetector arrays can be employed at any scattering angle from 12 to 157°. This design permits data to be collected over a uniquely wide range of d spacings while maintaining high resolution and count rates. The performance of the two instruments is evaluated by analyzing data from a standard Al2O3 sample by the Rietveld method. These instruments provide the capability for moderate- to high-resolution measurements with the duration of a typical run being a few hours.

A Fast Pulsed Neutron Source for Time-of-Flight Detection of Nuclear Materials and Explosives

2011 ◽  
Author(s):  
Mahadevan Krishnan ◽  
Brian Bures ◽  
Colt James ◽  
Robert Madden ◽  
Wolfgang Hennig ◽  
...  
Keyword(s):  
Neutron Source ◽  
Time Of Flight ◽  
Nuclear Materials ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

Neutron Transmission of a Single-Crystal MgO Filter

1998 ◽  
Vol 31 (6) ◽  
pp. 841-844 ◽  
Author(s):  
P. Thiyagarajan ◽  
R. K. Crawford ◽  
D. F. R. Mildner
Keyword(s):  
Single Crystal ◽  
Liquid Nitrogen ◽  
Neutron Source ◽  
Room Temperature ◽  
Transmission Probability ◽  
Neutron Transmission ◽  
Absorption Probability ◽  
Cold Neutrons ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

The neutron transmission probability through a single-crystal MgO filter has been measured at both liquid-nitrogen (77 K) and room (300 K) temperatures, as a function of wavelength, using a pulsed neutron source. The data show that a cooled MgO filter is superior to room-temperature sapphire for both thermal and cold neutrons, principally because the absorption probability is reduced by a factor of three at long wavelengths.

scholarly journals Measurement of ultracold neutrons produced by using Doppler-shifted Bragg reflection at a pulsed-neutron source

1980 ◽  
Vol 75 (3) ◽  
pp. 223-224 ◽  
Author(s):  
T.O. Brun ◽  
J.M. Carpenter ◽  
V.E. Krohn ◽  
G.R. Ringo ◽  
J.W. Cronin ◽  
...  
Keyword(s):  
Neutron Source ◽  
Bragg Reflection ◽  
Ultracold Neutrons ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source
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