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公开(公告)号：US20170260619A1
公开(公告)日：2017-09-14
申请号：US14900253
申请日：2015-06-29
CPC分类号： C23C14/0635 , C23C14/028 , C23C14/165 , C23C14/34 , G01T3/00
摘要： The present invention relates to a method for producing a neutron converter from boron carbide or a boron film on a neutron transparent metal substrate. The neutron transparent metal substrate is polished in a first step by fine grinding and coated in a further step by means of sputtering with boron carbide or a boron film. An adhesion promoting layer is optionally applied between the metal substrate and below the boron or boron carbide layer. The coatings obtained have a high homogeneity in layer thickness, chemical composition and isotope ratio as well as a low level of impurities such as oxygen or nitrogen.
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公开(公告)号：US10989823B2
公开(公告)日：2021-04-27
申请号：US16635178
申请日：2018-07-19
发明人： Jörg Burmester , Gregor Jacek Nowak , Jörn Plewka , Christian Jacobsen , Carsten Peter Gregersen , Wolfgang Puls , Andreas Beldowski , Dirk Jan Siemers , Rüdiger Kiehn , Sven Kleeband , Thorsten Böttcher , Gerd Musielak , Erik Sitko , John Hedde
IPC分类号： G01T3/00
摘要： The present invention relates to a neutron detector that for the first time permits the construction of large detector areas of approximately 1 m2 to 2 m2, with a spatial resolution of the neutrons of under 2 mm. It is additionally possible in the case of the modular construction in a stack arrangement to attain detection sensitivities that are comparable to 3He counter tubes (ca. 60%) or, with a greater number of detector elements, higher. By using thin substrate plates—such as aluminum sheets—and omission of the external pressure vessels, the neutron detectors are relatively lightweight despite their large dimensions and can be produced inexpensively.
The neutron detector comprises at least one module (detector element) comprising in each case two mutually parallel substrate plates made from a first neutron-transparent material, with said plates being spanned in each case on a self-supporting frame made of a second neutron-transparent material and being coated with a neutron absorber material on a side that is remote from the self-supporting frame, wherein the side that is coated with a neutron absorber material faces the respectively other substrate plate on an inner side, and a gas-tight measurement space, which is filled with a counter gas and in which two electrode wire planes, arranged parallel to the substrate plates, having electrode wires that run parallel in the respective electrode wire planes are arranged and in which the electrode wire planes are spaced apart from one another by way of a spacer frame, is defined between the mutually facing, coated inner sides of the substrate plates. The modules can be arranged successively in a stack arrangement.-
公开(公告)号：US20210096272A1
公开(公告)日：2021-04-01
申请号：US16635178
申请日：2018-07-19
发明人： Jörg Burmester , Gregor Jacek Nowak , Jörn Plewka , Christian Jacobsen , Carsten Peter Gregersen , Wolfgang Puls , Andreas Beldowski , Dirk Jan Siemers , Rüdiger Kiehn , Sven Kleeband , Thorsten Böttcher , Gerd Musielak , Erik Sitko , John Hedde
IPC分类号： G01T3/00
摘要： The present invention relates to a neutron detector that for the first time permits the construction of large detector areas of approximately 1 m2 to 2 m2, with a spatial resolution of the neutrons of under 2 mm. It is additionally possible in the case of the modular construction in a stack arrangement to attain detection sensitivities that are comparable to 3He counter tubes (ca. 60%) or, with a greater number of detector elements, higher. By using thin substrate plates—such as aluminum sheets—and omission of the external pressure vessels, the neutron detectors are relatively lightweight despite their large dimensions and can be produced inexpensively.
The neutron detector comprises at least one module (detector element) comprising in each case two mutually parallel substrate plates made from a first neutron-transparent material, with said plates being spanned in each case on a self-supporting frame made of a second neutron-transparent material and being coated with a neutron absorber material on a side that is remote from the self-supporting frame, wherein the side that is coated with a neutron absorber material faces the respectively other substrate plate on an inner side, and a gas-tight measurement space, which is filled with a counter gas and in which two electrode wire planes, arranged parallel to the substrate plates, having electrode wires that run parallel in the respective electrode wire planes are arranged and in which the electrode wire planes are spaced apart from one another by way of a spacer frame, is defined between the mutually facing, coated inner sides of the substrate plates. The modules can be arranged successively in a stack arrangement.
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