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Neutrons

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Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001765
EISBN: 978-1-62708-178-8
... Abstract Neutrons are a principal tool for the study of lattice vibrational spectra in materials. This article provides a detailed account of fission and spallation methods of neutron production that are capable of producing sufficient intensity to be useful in neutron scattering research...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006667
EISBN: 978-1-62708-213-6
... Abstract This article provides a brief introduction to neutron diffraction as well as its state-of-the-art capabilities. The discussion covers the general principles of the neutron, neutron-scattering theory, generation of neutrons, types of incident radiation, and purposes of single-crystal...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001748
EISBN: 978-1-62708-178-8
... Abstract Neutron activation analysis (NAA) is a highly sensitive and accurate method of assaying bulk materials for trace levels of many elements. This article provides a detailed account on several types of NAA, namely, nondestructive and radiochemical thermal neutron activation, delayed...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006642
EISBN: 978-1-62708-213-6
... Abstract This article provides a detailed account of the concepts and applications of neutron activation analysis (NAA), covering the basic principles and neutron reactions of NAA as well as calibration methods used for NAA. The discussion also covers the factors pertinent to analytical...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001036
EISBN: 978-1-62708-161-0
... Abstract Damage to steels from neutron irradiation affects the properties of steels and is an important factor in the design of safe and economical components for fission and fusion reactors. This article discusses the effects of high-energy neutrons on steels. The effects of damage caused...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001763
EISBN: 978-1-62708-178-8
..., desmearing parameters, and the types of scattering curves are illustrated. ceramics ferrous metals metallic glass nonferrous metals polymers small-angle neutron scattering small-angle X-ray diffraction Overview Introduction Small-angle x-ray scattering (SAXS) and small-angle neutron...
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Published: 01 June 2016
Fig. 7 Neutron diffraction measurement locations for cold-water-quenched rectilinear block made from alloy 7449. L, longitudinal; LT, long transverse; ST, short transverse More
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Published: 01 June 2016
Fig. 10 Residual stresses measured by a neutron diffraction technique in a U-0.8Ti alloy cylinder. (a) After a gamma solution heat treatment and water immersion quench, a biaxial stress state is observed with very large surface compressive and interior tensile residual stresses. (b) Aging More
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Published: 01 January 1990
Fig. 2 Effect of temperature and neutron fluence on the swelling behavior of type 316 stainless steel irradiated in a fast reactor (EBR-II). Source: Ref 3 More
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Published: 01 January 1990
Fig. 7 Effect of neutron fluence on the 41 J (30 ft · lbf) transition temperature in Charpy impact tests at temperatures below 232 °C (450 °F). Test specimen: 150 mm (6 in.) thick manganese-molybdenum steel (ASTM A 302, grade B). Source: Ref 21 More
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Published: 01 January 1986
Fig. 1 γ-ray spectrum of a neutron-irradiated ore sample from the Jemez mountains, New Mexico, recorded using a Ge(Li) detector five days after irradiation. The lower figure is an expanded view of Detail A in the upper figure. The necessity of high resolution is evident from the proximity More
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Published: 01 January 1986
Fig. 2 γ-ray spectra of a neutron-irradiated NBS fly ash sample showing the change that occurs as a function of time. The upper spectrum was recorded in the time interval 18 to 27 min after irradiation; the lower spectrum is a 2-h count recorded after 20 days of decay. None of the peaks More
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Published: 01 January 1986
Fig. 3 γ-ray spectrum of a neutron-irradiated high-purity nickel sample. The spectrum, recorded in the time interval 3 to 8 min after a 20-s irradiation, shows the presence of titanium, manganese, and vanadium in the sample. More
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Published: 01 January 1986
Fig. 5 Comparison of γ-ray spectrums. Upper spectrum shows a neutron-irradiated rock sample that contains 3 ppb iridium (26 days decay). Lower spectrum shows the chemically isolated iridium fraction (pure 74.2-d 192 Ir). More
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Published: 01 January 1986
Fig. 1 Schematic diagram of a neutron powder diffractometer equipped with a multidetector bank. M, monochromator More
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Published: 01 January 1986
Fig. 4 Time-of-flight single-crystal diffractometer at a pulsed neutron source. Detector is usually fixed at 90° 2θ, and diffraction is recorded in Laue's geometry. The sample (a single crystal) is positioned by Eulerian angle motions. More
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Published: 01 January 1986
Fig. 5 Furnace designed for single-crystal neutron diffraction. Note that the beam readily penetrates the platinum foil heat shield. Source: Ref 14 More
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Published: 01 January 1987
Fig. 823 Effect of neutron irradiation on fracture mode and fracture toughness of the iron-nickel-base superalloy A-286 (UNS S66286). The plot of fracture toughness versus neutron exposure charts the degradation of K Ic with increased irradiation. Note the fracture-mode transition from More
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Published: 01 January 1996
Fig. 25 J c as a function of neutron exposure for base metals irradiated at intermediate temperatures. Values of dJ / da (in MPa) are provided in parentheses. Source: Ref 29 , 42 , 43 , 47 , 85 , and 125 More
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Published: 01 January 1996
Fig. 27 J c as a function of neutron exposure for welds irradiated at intermediate temperatures. Values of dJ / da (in MPa) are provided in parentheses. Source: Ref 29 , 43 , 47 , 55 , 85 , and 125 More