The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2003
Filed:
Jan. 11, 2000
Jakob Schelten, Jülich, DE;
Forschungszentrum Jülich GmbH, Jülich, DE;
Abstract
Method for analyzing a primary neutron beam of a neutron source, a neutron source having a beam monitor, and a beam monitor. Fission chambers which are arranged in the primary neutron beam are known as beam monitors. Fission processes initiated by the neutrons produce in the fission chambers free charge carriers which, given an applied electric voltage, effect an ionization current pulse by means of which the neutron is counted. Produced as by-product during fission are undesired fast neutrons and high-energy gamma radiation. In addition, the flux of slow neutrons can be substantially attenuated by the gas filling of the fission chambers. These disadvantages can be avoided in the case of the novel method, the novel neutron source and the novel beam monitor. Neutrons are scattered incoherently out of the primary neutron beam ( ) by means of a scattering foil ( ). A portion of the scattered neutrons ( ) strike a detector device ( ) which is arranged outside the primary neutron beam ( ). The beam monitor ( ) can be constructed straight away such that the spatial distribution and, in the case of pulsed neutron sources, the spectral distribution of the neutrons in the primary neutron beam ( ) can be determined. Analysis of a primary neutron beam of a neutron source, in particular a pulsed spallation neutron source.