Abstract
Due to the very limited availability of {sup 3}He, new kinds of neutron detectors, not based on {sup 3}He, are urgently needed. Here, we present a method to produce thin films of {sup 10}B{sub 4}C, with maximized detection efficiency, intended to be part of a new generation of large area neutron detectors. B{sub 4}C thin films have been deposited onto Al-blade and Si wafer substrates by dc magnetron sputtering from {sup nat}B{sub 4}C and {sup 10}B{sub 4}C targets in an Ar discharge, using an industrial deposition system. The films were characterized with scanning electron microscopy, elastic recoil detection analysis, x-ray reflectivity, and neutron radiography. We show that the film-substrate adhesion and film purity are improved by increased substrate temperature and deposition rate. A deposition rate of 3.8 A/s and substrate temperature of 400 deg. C result in films with a density close to bulk values and good adhesion to film thickness above 3 {mu}m. Boron-10 contents of almost 80 at. % are obtained in 6.3 m{sup 2} of 1 {mu}m thick {sup 10}B{sub 4}C thin films coated on Al-blades. Initial neutron absorption measurements agree with Monte Carlo simulations and show that the layer thickness, number of layers, neutron wavelength, and
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Hoeglund, Carina;
[1]
Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)];
Birch, Jens;
Jensen, Jens;
Hultman, Lars;
[2]
Andersen, Ken;
Hall-Wilton, Richard;
[1]
Bigault, Thierry;
Buffet, Jean-Claude;
Correa, Jonathan;
Esch, Patrick van;
Guerard, Bruno;
Piscitelli, Francesco;
[3]
Khaplanov, Anton;
[1]
Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)];
Vettier, Christian;
[1]
European Synchrotron Radiation Facility, BP 220, FR-380 43 Grenoble Cedex 9 (France)];
Vollenberg, Wilhelmus
[4]
- European Spallation Source ESS AB, P.O. Box 176, SE-221 00 Lund (Sweden)
- Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)
- Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)
- Vacuum, Surfaces and Coatings Group (TE/VSC), CERN, CH-1211 Geneva 23 (Switzerland)
Citation Formats
Hoeglund, Carina, Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)], Birch, Jens, Jensen, Jens, Hultman, Lars, Andersen, Ken, Hall-Wilton, Richard, Bigault, Thierry, Buffet, Jean-Claude, Correa, Jonathan, Esch, Patrick van, Guerard, Bruno, Piscitelli, Francesco, Khaplanov, Anton, Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)], Vettier, Christian, European Synchrotron Radiation Facility, BP 220, FR-380 43 Grenoble Cedex 9 (France)], and Vollenberg, Wilhelmus.
B{sub 4}C thin films for neutron detection.
United States: N. p.,
2012.
Web.
doi:10.1063/1.4718573.
Hoeglund, Carina, Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)], Birch, Jens, Jensen, Jens, Hultman, Lars, Andersen, Ken, Hall-Wilton, Richard, Bigault, Thierry, Buffet, Jean-Claude, Correa, Jonathan, Esch, Patrick van, Guerard, Bruno, Piscitelli, Francesco, Khaplanov, Anton, Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)], Vettier, Christian, European Synchrotron Radiation Facility, BP 220, FR-380 43 Grenoble Cedex 9 (France)], & Vollenberg, Wilhelmus.
B{sub 4}C thin films for neutron detection.
United States.
https://doi.org/10.1063/1.4718573
Hoeglund, Carina, Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)], Birch, Jens, Jensen, Jens, Hultman, Lars, Andersen, Ken, Hall-Wilton, Richard, Bigault, Thierry, Buffet, Jean-Claude, Correa, Jonathan, Esch, Patrick van, Guerard, Bruno, Piscitelli, Francesco, Khaplanov, Anton, Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)], Vettier, Christian, European Synchrotron Radiation Facility, BP 220, FR-380 43 Grenoble Cedex 9 (France)], and Vollenberg, Wilhelmus.
2012.
"B{sub 4}C thin films for neutron detection."
United States.
https://doi.org/10.1063/1.4718573.
@misc{etde_22038970,
title = {B{sub 4}C thin films for neutron detection}
author = {Hoeglund, Carina, Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)], Birch, Jens, Jensen, Jens, Hultman, Lars, Andersen, Ken, Hall-Wilton, Richard, Bigault, Thierry, Buffet, Jean-Claude, Correa, Jonathan, Esch, Patrick van, Guerard, Bruno, Piscitelli, Francesco, Khaplanov, Anton, Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)], Vettier, Christian, European Synchrotron Radiation Facility, BP 220, FR-380 43 Grenoble Cedex 9 (France)], and Vollenberg, Wilhelmus}
abstractNote = {Due to the very limited availability of {sup 3}He, new kinds of neutron detectors, not based on {sup 3}He, are urgently needed. Here, we present a method to produce thin films of {sup 10}B{sub 4}C, with maximized detection efficiency, intended to be part of a new generation of large area neutron detectors. B{sub 4}C thin films have been deposited onto Al-blade and Si wafer substrates by dc magnetron sputtering from {sup nat}B{sub 4}C and {sup 10}B{sub 4}C targets in an Ar discharge, using an industrial deposition system. The films were characterized with scanning electron microscopy, elastic recoil detection analysis, x-ray reflectivity, and neutron radiography. We show that the film-substrate adhesion and film purity are improved by increased substrate temperature and deposition rate. A deposition rate of 3.8 A/s and substrate temperature of 400 deg. C result in films with a density close to bulk values and good adhesion to film thickness above 3 {mu}m. Boron-10 contents of almost 80 at. % are obtained in 6.3 m{sup 2} of 1 {mu}m thick {sup 10}B{sub 4}C thin films coated on Al-blades. Initial neutron absorption measurements agree with Monte Carlo simulations and show that the layer thickness, number of layers, neutron wavelength, and amount of impurities are determining factors. The study also shows the importance of having uniform layer thicknesses over large areas, which for a full-scale detector could be in total {approx}1000 m{sup 2} of two-side coated Al-blades with {approx}1 {mu}m thick {sup 10}B{sub 4}C films.}
doi = {10.1063/1.4718573}
journal = []
issue = {10}
volume = {111}
journal type = {AC}
place = {United States}
year = {2012}
month = {May}
}
title = {B{sub 4}C thin films for neutron detection}
author = {Hoeglund, Carina, Department of Physics, Chemistry and Biology (IFM), Thin Film Physics Division, Linkoeping University, SE-581 83 Linkoeping (Sweden)], Birch, Jens, Jensen, Jens, Hultman, Lars, Andersen, Ken, Hall-Wilton, Richard, Bigault, Thierry, Buffet, Jean-Claude, Correa, Jonathan, Esch, Patrick van, Guerard, Bruno, Piscitelli, Francesco, Khaplanov, Anton, Institute Laue Langevin, Rue Jules Horowitz, FR-380 00 Grenoble (France)], Vettier, Christian, European Synchrotron Radiation Facility, BP 220, FR-380 43 Grenoble Cedex 9 (France)], and Vollenberg, Wilhelmus}
abstractNote = {Due to the very limited availability of {sup 3}He, new kinds of neutron detectors, not based on {sup 3}He, are urgently needed. Here, we present a method to produce thin films of {sup 10}B{sub 4}C, with maximized detection efficiency, intended to be part of a new generation of large area neutron detectors. B{sub 4}C thin films have been deposited onto Al-blade and Si wafer substrates by dc magnetron sputtering from {sup nat}B{sub 4}C and {sup 10}B{sub 4}C targets in an Ar discharge, using an industrial deposition system. The films were characterized with scanning electron microscopy, elastic recoil detection analysis, x-ray reflectivity, and neutron radiography. We show that the film-substrate adhesion and film purity are improved by increased substrate temperature and deposition rate. A deposition rate of 3.8 A/s and substrate temperature of 400 deg. C result in films with a density close to bulk values and good adhesion to film thickness above 3 {mu}m. Boron-10 contents of almost 80 at. % are obtained in 6.3 m{sup 2} of 1 {mu}m thick {sup 10}B{sub 4}C thin films coated on Al-blades. Initial neutron absorption measurements agree with Monte Carlo simulations and show that the layer thickness, number of layers, neutron wavelength, and amount of impurities are determining factors. The study also shows the importance of having uniform layer thicknesses over large areas, which for a full-scale detector could be in total {approx}1000 m{sup 2} of two-side coated Al-blades with {approx}1 {mu}m thick {sup 10}B{sub 4}C films.}
doi = {10.1063/1.4718573}
journal = []
issue = {10}
volume = {111}
journal type = {AC}
place = {United States}
year = {2012}
month = {May}
}