Analysis for an experimental study of time-reversal-violating effects in polarized neutron propagation through a polarized target

1996 ◽  
Vol 53 (7) ◽  
pp. 4070-4073 ◽  
Author(s):  
V. R. Skoy
Keyword(s):  
Experimental Study ◽  
Time Reversal ◽  
Polarized Target ◽  
Neutron Propagation ◽  
Polarized Neutron

A new polarized target for neutron scattering studies on biomolecules: first results from apoferritin and the deuterated 50S subunit of ribosomes

1992 ◽  
Vol 25 (2) ◽  
pp. 155-165 ◽  
Author(s):  
W. Knop ◽  
M. Hirai ◽  
H.-J. Schink ◽  
H. B. Stuhrmann ◽  
R. Wagner ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Ribosomal Proteins ◽  
Scattering Length ◽  
Large Subunit ◽  
Proton Spin ◽  
Proton Nuclear Magnetic Resonance ◽  
Research Centre ◽  
Polarized Target ◽  
Polarized Neutron ◽  
Polarized Neutron Scattering

A new polarized target for neutron scattering has been designed by CERN and tested successfully using the reactor FRG-1 at the GKSS Research Centre. The nuclear spins are aligned with respect to the external field – parallel or antiparallel – by dynamic nuclear polarization (DNP). To avoid absorption of neutrons by 3He, the frozen solutions of biomolecules are immersed in liquid 4He which in turn is thermally coupled to the cooling mixture of 3He/4He of the dilution refrigerator. Compared with earlier experiments where the sample had been cooled directly by 3He, the rate of detectable neutrons increased by a factor of 30. Another factor of 30 is due to the installation of the cold source and the beryllium reflector in FRG-1. Polarized neutron scattering from apoferritin in deuterated solvent shows that the proton spin polarization is homogeneous in apoferritin molecules. After saturation of proton nuclear magnetic resonance (NMR), polarized neutron scattering is dominated by deuteron spin contrast. With the deuterated large subunit of E. coli ribosomes, three different basic scattering functions are derived from spin-contrast variation, reflecting the known scattering-length-density distribution of the architecture of rRNA and ribosomal proteins. The planned in situ structure determination of a mRNA fragment is discussed in the light of the present results.

scholarly journals Time reversal tests in polarized neutron reactions

1998 ◽  
Author(s):  
Koichiro Asahi ◽  
J.D. Bowman ◽  
B. Crawford
Keyword(s):  
Time Reversal ◽  
Neutron Reactions ◽  
Polarized Neutron

Experimental study on performance of time reversal focusing

2019 ◽  
Vol 53 (5) ◽  
pp. 055302 ◽  
Author(s):  
Fuyin Ma ◽  
Jianyu Chen ◽  
Jiu Hui Wu
Keyword(s):  
Experimental Study ◽  
Time Reversal
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