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Autor:
M Kesselman, R.L Schulte
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 422:852-857
A directional thermal neutron detector has been developed that is capable of locating sources of thermal neutron emissions. The detector is based on large area silicon detectors in a modular design that is configured to take advantage of the non-isot
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 353:123-127
The use of large area planar silicon detectors coupled with gadolinium foils has been investigated to develop a thermal neutron detector having a large area-efficiency (Aϵ) product. Noise levels due to high detector capacitance limit the size of sil
Publikováno v:
Proceedings of 1994 IEEE Nuclear Science Symposium - NSS'94.
A compact microprocessor controlled thermal neutron detector system has been developed for portable radiation monitoring. The system uses large area planar silicon detectors coupled to gadolinium convertor foils in a sandwich configuration. Analog hy
Publikováno v:
Nuclear Instruments and Methods. 165:573-576
A procedure is described for the preparation and selection of U.S. National Bureau of Standards hydrogen-in-titanium standards, certified for bulk hydrogen content, for use as hydrogen references for surface analysis with ion beams.
Autor:
R.L. Schulte
Publikováno v:
Nuclear Instruments and Methods. 149:65-68
A method for the measurement of helium concentration profiles in the near surface region of materials has been developed. The technique used the 4He(7Li, γ)11B resonant reaction at ELi = 1.68 MeV to detect helium within a few micrometers of the surf
Publikováno v:
Nuclear Physics A. 243:202-214
Eight resonances have been observed in the 52 Cr(p, γ) 53 Mn reaction between E p = 0.90 and 1.03 MeV. Gamma-ray spectra have been accumulated at four of the resonances. Spin assignments have been made to the resonant states on the basis of the meas
Autor:
R.L. Schulte
Publikováno v:
Nuclear Instruments and Methods. 137:251-256
A method for the determination of oxygen and carbon concentration profiles in materials using the 16 O(d,p) 17 O and 12 C(d,p) 13 C reactions is reported. The method employs a spectrum deconvolution technique to extract the depth profiles in the near
Publikováno v:
Composites Science and Technology. 24:123-145
The distribution of absorbed moisture was measured in three integral composite skin-to-spar joint concepts. The graphite/epoxy joint specimens were dried, exposed to heavy water vapor environment and sectioned. The method of nuclear reaction analysis