Determination of Adjusted Neutron Spectra in Different MUSE Configurations by Unfolding Techniques

Neutron Response Function of Bonner Sphere Spectrometer With 6LiI(Eu) Detector. The detector response function was needed to measure the neutron fluence based on the count rates from Bonner Sphere Spectrometer (BSS). The determination of response function of a BSS with 6LiI(Eu) detector has been performed using Monte Carlo MCNPX code. This calculation was performed for BSS using scintillation detector of 4 mm × 4 mm 6LiI(Eu) which is placed at the center of a set of polyethylene spheres i.e bare, 2", 3", 5", 8", 10", and 12" diameters. The BSS response functions were obtained for neutron energy of 1x10-9 MeV - 1x102 MeV in 111 energy bins and each value has an uncertainty less or equal to 2 %. The response function were compared with two response functions reported in the literature i.e IAEA document in Technical Reports Series 403 (TRS-403) and the calculation from Vega-Carrillo, et al. Also validated with measurement 252Cf neutron spectra, that shown the simulated BSS spectra were quite close to the experimental measured with a differrence of 3%.

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DETERMINATION OF NEUTRON SPECTRA IN A MOX PLANT FOR THE QUALIFICATION OF THE BD-PND BUBBLE DETECTOR

Health Physics ◽

10.1097/00004032-199908000-00011 ◽

1999 ◽

Vol 77 (2) ◽

pp. 200-206 ◽

Cited By ~ 2

Author(s):

R. Olaerts ◽

P. Kockerols ◽

A. Renard ◽

W. Rosenstock ◽

T. Köble ◽

...

Keyword(s):

Neutron Spectra

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An investigation of the neutrons produced in the deuteron-deuteron reaction

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1948.0107 ◽

1948 ◽

Vol 195 (1040) ◽

pp. 123-134 ◽

Cited By ~ 14

Keyword(s):

Angular Distribution ◽

Neutron Emission ◽

Photographic Plate ◽

Deuteron Beam ◽

Forward Direction ◽

Maximum Energy ◽

Neutron Spectra ◽

Precision Determination ◽

Good Agreement

Some properties of the 2 1 H + 2 1 H = 2 He+ 1 0 n reaction are investigated by the photographic plate technique for a bombarding deuteron energy of 920 keV. Thick deuterium targets only are used, and the following quantities measured : ( a ) The Q value—found to be (3·23 ± 0·02) MeV. ( b ) The neutron spectra at various angles of neutron emission. ( c ) The angular distribution of the neutrons. The problems arising in the application of the technique to the precision determination of neutron energy are discussed and the previous precision determination of the Q value by Bonner is criticized. The present results are in good agreement with the Q value of the reaction 2 1 H + 2 1 H = 3 1 H + 1 1 H and the maximum energy of the 3 1 H β-spectrum. The neutron spectra are in accord with those calculated from the ballistics of the reaction and the known excitation function. The neutron angular distribution shows a marked maximum in the forward direction and a minimum at 90° to the deuteron beam.

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A Practical Method for the Determination of the Instrumental Full Width at Half Maximum

Powder Diffraction ◽

10.1017/s0885715600013282 ◽

1988 ◽

Vol 3 (2) ◽

pp. 84-85 ◽

Cited By ~ 1

Author(s):

D.M.A. Guérin ◽

R.D. Bonetto ◽

A.G. Alvarez

Keyword(s):

Practical Method ◽

Systematic Errors ◽

Measuring Apparatus ◽

Full Width ◽

X Ray Diffraction ◽

X Ray ◽

Neutron Spectra ◽

Morphologic Characteristics ◽

Crystallite Sizes

X-ray diffraction and neutron spectra present a peak assembly whose maxima are centered at angles corresponding to Bragg's law.Analysis of diffracted intensity profiles in each peak can be used to estimate such morphologic characteristics of the samples as preferred orientation (Brindley and Kurtosy, 1961; Martin, 1966); crystallite sizes (Scherrer, 1919; Warren and Averbach, 1950; Wilson, 1962; and Guérin et al., 1986); and crystal shapes (Wilson, 1949). Such analysis can also be used to estimate the determination of residual stress and lattice defects (Warren and Averbach, 1950; Wilson, 1963). In such studies, a detailed analysis of the diffraction distribution is required and consequently adjustment of intensity values must be carried out, as they are affected by systematic errors in the measuring apparatus (for detailed description, see Klug and Alexander, 1974 and Wilson 1967).

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