Position-sensitive detectors (P.S.D.) for neutron diffraction

Allemand, Roger-Michel; Bourdel, J.; Roudaut, E.; Convert, P.; Ibel, K.; Jacobe, J.; Cotton, J. P.; Farnoux, B.

doi:10.1016/0029-554x(75)90227-x

Cited by 74 publications

(18 citation statements)

References 2 publications

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“…These developments include (a) area detectors with a resolution of about 1 mm and an active area of up to l00x 100 cm 2 , which allow data collection over a large range of scattering angles without the necessity of moving the detector (Alberi et al 1975;Allemende et al 1975); (b) thin-film multilayer monochromators with very high reflectivities (Schoenborn et al 1974;Saxena and Schoenborn 1977;Saxena and Majkrzak 1982); (c) neutron guides, either made of multilayer supermirrors or coated with 58Ni, which can decrease the losses in transporting neutrons (Ebisawa et al 1979;Scharpf 1982); (d) various crystal and mirror focusing devices for increasing the flux of neutrons at the sample (Saxena and Majkrzak 1984;Pynn 1984); and (e) use of array processors for fast handling of data from the detector. Some of these features have been incorporated in a neutron spectrometer which is being built for the H3B station of the High Flux Beam Reactor at Brookhaven National Laboratory.…”

Section: Introductionmentioning

confidence: 99%

A Neutron Spectrometer with a Two-dimensional Detector for Time-resolved Studies

Bp¹,

Saxena²,

Stamm³

et al. 1985

Aust. J. Phys.

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Aust. J. Phys., 1985, 38, 337-51 An intermediate resolution neutron spectrometer for collecting diffraction data with the range Q = 0·01-3·0 A has been built for analysing the structural organization of membranes, polymers and other molecular aggregates. This spectrometer has a position-sensitive detector with a capability for time-resolved data collection which may be used to study conformational changes in dynamical systems. A double multilayer monochromator assembly is used to monochromate neutrons. Operating wavelehgths of the spectrometer will be from 2 to 5 A, and the wavelength bandwidth (ilA/A) can be adjusted within the 1'70-8% range.

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Section: Introductionmentioning

confidence: 99%

A Neutron Spectrometer with a Two-dimensional Detector for Time-resolved Studies

Bp¹,

Saxena²,

Stamm³

et al. 1985

Aust. J. Phys.

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“…Such an elementary array contrasts the much more sophisticated devices for neutron position encoding inside a large gas volume, either I°BF.~ or 3He. One system, the 'Banana'-type PSD developed in Grenoble (Allemand et al, 1975), is based on a multi-wire technique using I°BF3 gas. 3He under normal pressure is used for the resistancecapacitance position encoding developed at Oak Ridge (Borkowski & Kopp, 1975).…”

Section: Introductionmentioning

confidence: 99%

A new linear position-sensitive scintillation detector for neutron powder diffractometry

Schäfer¹,

Jansen²,

Elf³

et al. 1984

J Appl Cryst

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A new linear position-sensitive scintillation detector has been developed and installed on a neutron powder diffractometer. The physical properties of this detector are described; test powder diffractograms are presented. The special advantages of this detector for neutron powder diffractometry are discussed: high detection efficiency also in the region of short wavelengths (75% for 2 = 1.3 /~), good spatial resolution (FWHM = 2"5 mm), and high data-point density (A20=0"02°). Special emphasis is placed on peakprofile analysis for the powder diffraction patterns. Examples for position and intensity separation of overlapping reflections are presented.

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“…Allemande [9] has built two wire chambers using BF 3 with efficiencies of 40 and 70%. They found a resolution of 2.6 mm, which is slightly greater than the particle track length of 2.5 mm.…”

Section: Introductionmentioning

confidence: 99%

Performance of a pressurized multiwire proportional chamber for neutron radiography

Director¹

1979

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A study was made of the effect of gas density on resolution and efficiency of a neutron sensitive multiwire proportional chamber. Increasing the density will shorten the reaction products range. A pressure vessel was designed and constructed for 4 atm thereby reducing the range of the reaction products from the neutron converter by a factor of 4, compared to 1 atm. Pressurizing the chamber to 4 atm resulted in a spatial resolution of 1mm under the most favor able operating conditions. For the type of neutron converters used improving the efficiency is lim ited to a choice of material. Two different materials were tried, gadolinium and boron, with effici.ncies of 6.3 and 2.3%, respectively.

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Position-sensitive detectors (P.S.D.) for neutron diffraction

Cited by 74 publications

References 2 publications

A Neutron Spectrometer with a Two-dimensional Detector for Time-resolved Studies

A Neutron Spectrometer with a Two-dimensional Detector for Time-resolved Studies

A new linear position-sensitive scintillation detector for neutron powder diffractometry

Performance of a pressurized multiwire proportional chamber for neutron radiography

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