A spectrometer for inelastic scattering using neutrons from 1 eV to 186 eV

Brugger, R.M.; Taylor, Andrew D.; Olsen, C.E.; Goldstone, J. A.; Soper, A. K.

doi:10.1016/0167-5087(84)90011-5

Cited by 46 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Leaving aside a pioneering NCS experiment on water, 10 this development happened when new pow-erful spallation neutron sources, such as LANSCE and IPNS in USA, KENS in Japan, and ISIS in UK, became operational during the 1980s. 11 In particular, a permanent NCS instrument, named eVS ͑electron Volt Spectrometer͒, was set up at ISIS in 1988 ͑Ref. 12͒ and yielded a large number experimental results until 2000, when it was disassembled to be converted into the present epithermal neutron spectrometer VESUVIO.…”

Section: Introductionmentioning

confidence: 99%

Neutron Compton scattering as a molecular characterization technique: A study onNaHF2

et al. 2007

View full text Add to dashboard Cite

Inelastic neutron scattering experiments were performed at intermediate and high momentum transfers, up to 85-90 Å −1 , to study the proton momentum distribution in polycrystalline sodium hydrogen fluoride ͑NaHF 2 ͒ at low temperature ͑below 5 K͒. The H mean kinetic energy was extracted and compared to the results from hydrogen-projected density of phonon states derived from intermediate momentum transfer inelastic neutron scattering and lattice dynamics simulations. A reasonable agreement between the two figures was found. In addition, relevant aspects of high momentum transfer neutron scattering from NaHF 2 were explored in detail, ranging from an alternative evaluation of final state effects to the role played by the instrumental resolution and to the possibility to reconstruct the potential felt by a proton from its momentum distribution.

show abstract

Section: Introductionmentioning

confidence: 99%

Neutron Compton scattering as a molecular characterization technique: A study onNaHF2

et al. 2007

View full text Add to dashboard Cite

show abstract

“…In The NCS experiments were carried out at ISIS with VESUVIO (formerly eVS), an ''electron volt spectrometer'' [11][12][13][14]19]. The filter-difference method [19] was used, with a gold absorber. It absorbs neutrons at 4.908 eV, with a resonance width of about 0.28 eV.…”

mentioning

confidence: 99%

Comparison of Electron and Neutron Compton Scattering from Entangled Protons in a Solid Polymer

Chatzidimitriou‐Dreismann

Vos

Kleiner

et al. 2003

Phys. Rev. Lett.

View full text Add to dashboard Cite

We present, for the first time, a direct comparison between electron (ECS) and neutron (NCS) Compton scattering results from protons of a solid polymer. The momentum distributions of hydrogen obtained from ECS and NCS are in excellent agreement. In both experiments, a strong "anomalous" shortfall in the scattering intensity of protons [first detected in liquid water with NCS [Phys. Rev. Lett. 79, 2839 (1997)]]] is found ranging from about 20% up to 50%, depending on the momentum transfer applied. The characteristic times of electron- and neutron-proton collisions lie in the subfemtosecond range. The presented ECS and NCS results provide further direct evidence for this striking effect, which has been ascribed to attosecond quantum entanglement of the protons.

show abstract

“…In the case gadolinium-or cadmium-based sensors, one detects the prompt emission of gamma rays and one can use gamma-sensitive scintillators, highpurity germanium detectors, or even CCDs [22]. We also note that epithermal neutrons can be detected while using a resonant nuclear reaction and measuring the resulting emission of photons [23]. In addition to the scattering processes, some elements (and isotopes) have particularly large probabilities to absorb the incoming neutrons.…”

Section: Neutron Methods-general Descriptionmentioning

confidence: 99%

Neutrons for Cultural Heritage—Techniques, Sensors, and Detection

Festa

Romanelli

Senesi

et al. 2020

Sensors

View full text Add to dashboard Cite

Advances in research in Cultural Heritage see increasing application of a multidisciplinary approach and the combined use of physical and chemical characterization of artefacts that can be used to define their structure and their state of conservation, also providing valuable information in selecting the most suitable microclimatic conditions for the exhibition environment. This approach provides a platform for a synergic collaboration amongst researchers, restorers, conservators, and archaeologists. Existing state-of-the-art technologies for neutron-based methods are currently being applied to the study of objects of historical and cultural interest in several neutron-beam facilities around the world. Such techniques are non-invasive and non-destructive and are, therefore, ideal to provide structural information about artefacts, such as their composition, presence of alterations due to the environmental conditions, inclusions, structure of the bulk, manufacturing techniques, and elemental composition, which provide an overall fingerprint of the object’s characteristics, thanks to the nature of the interaction of neutrons with matter. Here, we present an overview of the main neutron methods for the characterization of materials of interest in Cultural Heritage and we provide a brief introduction to the sensors and detectors that are used in this framework. We conclude with some case studies underlining the impact of these applications in different archaeological and historical contexts.

show abstract

A spectrometer for inelastic scattering using neutrons from 1 eV to 186 eV

Cited by 46 publications

References 12 publications

Neutron Compton scattering as a molecular characterization technique: A study onNaHF2

Neutron Compton scattering as a molecular characterization technique: A study onNaHF2

Comparison of Electron and Neutron Compton Scattering from Entangled Protons in a Solid Polymer

Neutrons for Cultural Heritage—Techniques, Sensors, and Detection

Contact Info

Product

Resources

About