Volume 500, Issue 6 pp. 399-403
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New Converging Collimator for Cold Neutrons Time-Of-Flight Measurements

Dr. K. Naguib

Dr. K. Naguib

Reactor and Neutron Physics Department Nuclear Research Center Atomic Energie Establishment, Cairo, Egypt

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Dr. O. H. Sallam

Dr. O. H. Sallam

Reactor and Neutron Physics Department Nuclear Research Center Atomic Energie Establishment, Cairo, Egypt

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Prof. Dr. Mohamed Salama

Prof. Dr. Mohamed Salama

Nuclear Regulatory and Safety Center Atomic Energy Authority, Cairo, Egypt

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Abstract

en

An idea to design a new converging collimator for cold neutron time-of-flight measurements is presented. Using this new facility in combination with a neutron time-of-flight spectrometer, we may have neutron intensity gain factors about three times that obtained using the conventional straight slit collimators. Expressions for calculating the collimators dimensions as well as the intensity gain and the time resolution broading were presented.

Abstract

de

Ein neuer, konvergierender Kollimator für Flugzeitmessungen mit langsamen Neutronen

Die Idee der Konstruktion eines neuen, konvergierenden Kollimators für Flugzeitmessungen mit langsamen Neutronen wird vorgestellt. Mit diesem neuen Gerät in Kombination mit einem Neutronenflugzeitspektrometer sollte sich ein Intensitätsgewinn von drei gegenüber konventionellen Anordnungen ergeben. Die Kollimatordimensionen, der Intensitätsgewinn und die Verbreiterung der Zeitauflösung werden berechnet.

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