scholarly journals Neutron transmission probability through a revolving slit for a continuous source and a divergent neutron beam

2005 ◽  
Vol 540 (2-3) ◽  
pp. 419-429 ◽  
Author(s):  
J. Peters
Keyword(s):  
Neutron Beam ◽  
Transmission Probability ◽  
Neutron Transmission ◽  
Continuous Source

Neutron transmission probability through a curved revolving slit

1959 ◽  
Vol 4 (3) ◽  
pp. 140-150 ◽  
Author(s):  
M. Marseguerra ◽  
G. Pauli
Keyword(s):  
Transmission Probability ◽  
Neutron Transmission

scholarly journals Measurement of P-Violation in 139La(n,γ)140La – a first step towards a T-Violation search

2019 ◽  
Vol 219 ◽  
pp. 09002 ◽  
Author(s):  
Tomoki Yamamoto ◽  
Hirohiko M. Shimizu ◽  
Masaaki Kitaguchi ◽  
Katsuya Hirota ◽  
Christopher C. Haddock ◽  
...  
Keyword(s):  
Angular Correlation ◽  
Neutron Beam ◽  
Beam Line ◽  
Significant Source ◽  
Spin Filter ◽  
Line Number ◽  
Neutron Transmission ◽  
Longitudinal Asymmetry ◽  
T Violation ◽  
Good Agreement

We performed a polarized neutron transmission asymmetry measurement utilizing the 139La(n,γ)140La reaction. This measurement involved the use of a recently developed 3He spin filter mounted on the J-PARC MLF beam line number 4 (BL04). The resulting value of the longitudinal asymmetry AL = (11.7 ± 1.1)% was found to be in good agreement with existing values in the literature suggesting that the method by which we polarize the neutron beam is not a significant source of uncertainty. This preliminary work represents a first step toward future measurements of the angular correlation in (n̅,Υ) reactions necessary in the search for enhanced T-Violation in compound nuclei.

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.

Modeling radial collimators for use in stress and texture measurements with neutron diffraction

2000 ◽  
Vol 33 (2) ◽  
pp. 334-337 ◽  
Author(s):  
D.-Q. Wang ◽  
X.-L. Wang ◽  
J. L. Robertson ◽  
C. R. Hubbard
Keyword(s):  
Neutron Diffraction ◽  
Neutron Beam ◽  
Numerical Models ◽  
Texture Mapping ◽  
Beam Width ◽  
Center Of Gravity ◽  
Neutron Transmission ◽  
Blade Thickness ◽  
Sampling Volume ◽  
Effective Beam

Radial collimators have been recently introduced to define the sampling volume during neutron diffraction stress and texture mapping experiments. This paper presents both analytical and Monte Carlo numerical models for the calculation of the spatial distribution of neutron transmission through a radial collimator. It is shown that the effective size of the scattered neutron beam as seen by detectors behind the collimator is quite sensitive to the collimator length and the number of blades. For a given radius of a collimator, the effective beam width increases sharply as the length is shortened. Due to the finite blade thickness, the center of gravity of the sampling volume is shifted away from the collimator. In contrast, attenuation of the neutron beam by the sample brings the center of gravity of the sampling volume closer to the collimator.

The Albedo effect on neutron transmission probability

1997 ◽  
Vol 48 (10-12) ◽  
pp. 1667-1671 ◽  
Author(s):  
A. Khanouchi ◽  
A. Sabir ◽  
M. Boulkheir ◽  
R. Ichaoui ◽  
J. Ghassoun ◽  
...  
Keyword(s):  
Transmission Probability ◽  
Neutron Transmission ◽  
Albedo Effect

Investigation of the total neutron cross section for natural hafnium on the filtred neutron beam with energy 59 keV

2011 ◽  
Vol 30 (0) ◽  
pp. 142-147
Author(s):  
О. О. Грицай ◽  
А. К. Гримало ◽  
В. В. Колотий ◽  
В. М. Венедиктов ◽  
С. П. Волковецький ◽  
...  
Keyword(s):  
Cross Section ◽  
Neutron Beam ◽  
Neutron Cross Section ◽  
Total Neutron ◽  
Total Neutron Cross Section

Atomic disruption beam theory

2016 ◽  
pp. 3524-3528
Author(s):  
Casey Ray McMahon
Keyword(s):  
Neutron Beam ◽  
Beam Theory ◽  
Solid Material ◽  
Material Matter ◽  
Solid Matter ◽  
Plasma Generation ◽  
Resulting Effect ◽  
Drilling Operations ◽  
The Stability

In this paper, I discuss the theory behind the use of a dense, concentrated neutron particle-based beam. I look at the particle based physics behind such a beam, when it is focused against solid material matter. Although this idea is still only theoretical, it appears that such a beam may be capable of disrupting the stability of the atoms within solid matter- in some cases by passing great volumes of neutrons between the electron and nucleus thus effectively “shielding” the electron from the charge of the nucleus. In other cases, by disrupting the nucleus by firing neutrons into it, disrupting the nucleus and weakening its bond on electrons. In either case- the resulting effect would be a disruption of the atom, which in the case of material matter would cause said material matter to fail, which would appear to the observer as liquification with some plasma generation. Thus, a dense neutron particle based beam could be used to effectively liquefy material matter. Such a beam could bore through rock, metal, or even thick, military grade armour, like that used on tanks- causing such materials to rapidly liquefy. The denser and thicker the neutron beam, the more devastating the effect of the beam- thus the faster material matter will liquefy and the greater the area of liquification. Such a beam would have applications in Defence, mining and drilling operations.

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