Electron-volt spectrscopy at a pulsed neutron source using a resonance detector technique by C. Andreani

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Published by Rutherford Appleton Laboratory in Chilton .

Written in English

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StatementC. Andreani and others.
SeriesRutherford Appleton Laboratory Technical Report -- RAL-TR-2002-015
ContributionsRutherford Appleton Laboratory., Council For The Central Laboratory of The Research Councils.
ID Numbers
Open LibraryOL19808869M

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Electron-volt spectroscopy at a pulsed neutron source using a resonance detector technique. on the Electron Volt Spectrometer (eVS). The results obtained in this paper should be regarded as a first step towards the routinely use of the Resonant Detector Technique for spectroscopy of epithermal neutrons in the 1– eV by: Request PDF | Electron-volt spectroscopy at a pulsed neutron source using a resonance detector technique | The effectiveness of the neutron resonance detector spectrometer for deep inelastic.

The effectiveness of the neutron resonance detector spectrometer for deep inelastic neutron scattering measurements has been assessed by measuring the Pb scattering on the eVS spectrometer at ISIS pulsed neutron source and natural U foils as (n,γ) resonance converters.

A conventional NaI scintillator with massive shielding has been used as γ detector. A neutron energy Cited by:   Nuclear Instruments and Methods in Physics Research () Norlh-Holland, Amsterdam ELECTRON VOLT SPECTROSCOPY ON A PULSED NEUTRON SOURCE R.J. NEWPORT, J. PENFOLD and W.G.

WILLIAMS Neutron Division, Rutherford Appleton Laboratory, Chillon, Didcot, Oxon, OXll OQX, England Received 18 November and in revised form 10 January The principal design aspects of a pulsed Cited by: The principal design aspects of a pulsed source neutron spectrometer in which the scattered neutron energy is determined by a resonance absorption filter difference method are discussed.

Calculations of the accessible dynamic range, resolution and spectrum simulations are given for the spectrometer on a high intensity pulsed neutron source, such as the spallation neutron source (SNS) now being Cited by: Available from UMI in association with The British Library.

Requires signed TDF. This thesis describes the development of an electron -volt neutron spectrometer which utilises strong resonance neutron absorption to detect epithermal neutrons.

Two methods have been developed; a Resonance Detector Spectrometer (RDS) in which a photon detector is used to observe the prompt gamma rays emitted.

The Resonance Detector Technique (RDT) is a potentially attractive technique for epithermal neutron spectroscopy at pulsed neutron sources [1]. The main interest in the RDT is given by the possibility that it offers, when combined with an inverse geometry neutron spectrometer, to extend the (q, ω) kinematical region for neutron scattering.

Radiative neutron capture as a counting technique at pulsed spallation neutron sources: a review of current progress E M Schooneveld, A Pietropaolo, C Andreani et al.-Over the Horizon: Future Roles of Electron Volt Neutron Spectroscopy A G Seel, M Krzystyniak, R Senesi et al.-Recent citations Neutron-resonance capture analysis on.

ESS European Spallation Source IDEAS Integrated Detector Electronics AS TOF time-of-flight List of Figures Fig. Pulse height spectrum of Li-glass scintillator showing the pulse heights from neutron capture relative to that of 60Co-gamma rays (brochure from scintacor, formerly AST) Solid-State Neutron Detector SoNDe.

Tremsin AS et al () Neutron resonance transmission spectroscopy with high spatial and energy resolution at the J-PARC pulsed neutron source. Nucl Instr Meth A Google Scholar Vallerga J et al () The current and future capabilities of MCP based UV detectors.

PDF | New evidence of the increased count rate in deep inelastic neutron scattering spectra is provided. Experiments were performed using | Find, read and cite all the research you need on. A short-pulse high-intensity laser with state-of-the-art pulse contrast and an energy of a few hundred Joules would drive a compact neutron source suitable for NRS thermometry that could transform the dynamic study of materials.

The 2nd generation of the Time-Resolved Integrative Optical Neutron detector (TRION Gen.2), seen in Fig. 2, is designed to detect fast-neutron pulses produced, for example, in the 9Be(d,n) reaction using a pulsed (~ ns pulse width, MHz repetition rate) deuteron beam.

After a specific Time-of-Flight (TOF) that depends on the. The electron Volt Spectrometer (eVS) is an inverse geometry filter difference spectrometer that has been optimised to measure the single atom properties of condensed matter systems using a technique known as Neutron Compton Scattering (NCS) or Deep Inelastic Neutron Scattering (DINS).

The spectrometer utilises the high flux of epithermal neutrons that are produced by the ISIS neutron. PDF | In this work, we discuss an improved detection procedure for the photon-sensitive yttrium-aluminum-perovskite detectors installed on the VESUVIO | Find, read and cite all the research you.

Recent studies indicate the resonance detector (RD) technique as an interesting approach for neutron spectroscopy in the electron volt energy region. This work summarizes the results of a series of experiments where RD consisting of Y Al O 3 (YAP) scintillators were used to detect scattered neutrons with energy in the range 1– eV.

Recent studies indicate the resonance detector (RD) technique as an interesting approach for neutron spectroscopy in the electron volt energy region.

This work summarizes the results of a series of experiments where RD consisting of YAlO3 (YAP) scintillators were used to detect scattered neutrons with energy in the range 1– eV.

The response of YAP scintillators to radiative capture γ. The principal design aspects of a pulsed source neutron spectrometer in which the scattered neutron energy is determined by a resonance absorption filter difference method are discussed.

Calculations of the accessible dynamic range, resolution and spectrum simulations are given for the spectrometer on a high intensity pulsed neutron source, such as the spallation neutron source (SNS) now being.

Spectroscopy • Most spectrometers operate in pulse mode • Amplitude of each pulse is proportional to the energy deposited in the detector by the interaction causing that pulse • The energy deposited by an interaction is not always the total energy of the incident particle or photon •A pulse height spectrum is usually depicted as a.

Recent studies indicate the resonance detector (RD) technique as an interesting approach for neutron spectroscopy in the electron volt energy region. This work summarizes the results of a series of experiments where RD consisting of YAlO 3 (YAP) scintillators were used to detect scattered neutrons with energy in the range eV.

The principal design aspects of a pulsed source neutron spectrometer in which the scattered neutron energy is determined by a resonance absorption filter difference method are discussed. This work provides an up-to-date account of the use of electron-volt neutron spectroscopy in materials research.

This is a growing area of neutron science, capitalising upon the unique insights provided by epithermal neutrons on the behaviour and properties of an increasing number of complex materials.

As such, the present work builds upon the aims and scope of a previous contribution to this. The electron Volt Spectrometer (eVS) is an inverse geometry filter difference spectrometer that has been optimised to measure the single atom properties of condensed matter systems using a technique known as Neutron Compton Scattering (NCS) or Deep Inelastic Neutron Scattering (DINS).

Pulsed fast/thermal neutron analysis (PFTNA) is a neutron-based technique which utilizes the (n,n'gamma), (n,pgamma), and (n,gamma) reactions to identify and quantify a large number of elements.

The availability of pulsed neutron sources allowed the development of several valuable formation evaluation techniques: thermal die-away logging and spectroscopy of neutron-induced gamma rays.

At the heart of these techniques is the neutron generator discussed in Chapter In this work, we discuss an improved detection procedure for the photon-sensitive yttrium-aluminum-perovskite detectors installed on the VESUVIO spectrometer at the ISIS pulsed neutron and muon sou.

Neutron resonance absorption imaging is a non-destructive technique that can characterize the elemental composition of a sample by measuring nuclear resonances in the spectrum of a transmitted beam.

Recent developments in pixelated time-of-flight imaging detectors coupled with pulsed neutron sources pose new opportunities for energy-resolved imaging. In this paper we demonstrate non. Radiative neutron capture as a counting technique at pulsed spallation neutron sources: a review of current progress E M Schooneveld et al-Enhancing the performances of a resonance detector spectrometer for deep inelastic neutron scattering measurements A.

Filabozzi et al-Electron volt neutron spectrometers A. Pietropaolo and R. Senesi. This paper has described the VESUVIO electron volt neutron spectrometer at the ISIS pulse neutron source and its data analysis routines.

VESUVIO has undergone a great improvement in resolution and accuracy of measurements over the past 2–3 years due to the replacement of the FD technique using neutron detectors by the FC technique using gamma. The main advantages of the RDS configuration are: (i) the counting efficiency is mostly independent of neutron energy, unlike techniques that use 6 Li or 3 He based counters [57, 77], (ii) the count rate of the detector is much lower so that it does not saturate and (iii) hybrid data recording approaches, such as the foil cycling technique [   New perspectives for epithermal neutron spectroscopy are being opened up by the development of the Resonance Detector (RD) and its use on inverse geometry time of flight (TOF) spectrometers at spallation sources.

The most recent result is the Foil Cycling Technique (FCT), which has been developed and applied on the VESUVIO spectrometer operating in the RD configuration. 1 ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, United Kingdom.

2 Università degli Studi di Roma 'Tor Vergata', Dipartimento di Fisica an. Diffractometers operating at a spallation source are based on the determination of neutron wavelength through the ToF technique according to the relation: (2) λ = h ⋅ t L ⋅ m n where h is Planck's constant, t is the time of flight of the neutrons from the moderator to the detector over a distance L (the total flight path) and m n is the.

ment. In this case, it does not matter if not the full energy of the neutron is deposited inside the detector, however, timing becomes important. Position information for neutrons can be gained by using a detector array with a su cient granularity or by measuring the time di erence of the light signals arriving on opposite ends of the detector.

developed an eV spectrometer based on the use of nuclear resonances for energy selection (see the article by Brugger,in these proceedings). The technique is to take the difference between spectra with resonance filters in the beam and removed.

Figure 12 shows the scattering fran liquid He using the U resonance at. A wireline log of the yields of different elements in the formation, measured using induced gamma ray spectroscopy with a pulsed neutron elemental yields are derived from two intermediate results: the inelastic and the capture inelastic spectrum is the basis for the carbon-oxygen log, and can also give information on other elements.

What technique returns neutron to the soil. Asked by Keki Ramirez. Be the first to answer. 0 1 2. Answer.

Who doesn't love being #1. Be the first to answer this question. Register to get answer. A method for determining a fractional volume of at least one component of a formation includes entering into a computer a number of detected radiation events resulting from imparting neutrons into the formation at an energy level of at least 1 million electron volts (MeV).

The detected radiation events correspond to at least one of an energy level of the imparted neutrons and thermal or. Spectroscopy is the study of the interaction between matter and electromagnetic radiation as a function of the wavelength or frequency of the radiation. Historically, spectroscopy originated as the study of the wavelength dependence of the absorption by gas phase matter of visible light dispersed by a prism.

Matter waves and acoustic waves can also be considered forms of radiative energy, and. surround the detector with a few cm being between the proportional counters and the neutron source. The pulse height spectrum from the interaction of a thermal neutron in a typical 3He neutron detector will look as shown in Figure Perhaps the most important point to note is there is no information about the primary neutron spectrum.

Pulsed neutron sources are typically either nuclear reactors or "spallation sources." At a reactor (a continuous source), the pulsing must be achieved by rotating some kind of absorber (a "chopper") in and out of the neutron beam.

At a spallation source, an energetic charged-particle accelerator is dumped into a heavy-metal target. The measured recoil spectra were unfolded using a standard technique [5, 6].

This neutron spectroscopy approach for evaluating neutron spectra [3, 4, 7] is well established; it utilizes the relationship between the neutron energy spectrum and the recoil proton spectrum which allowed us to identify and quantify a broad-energy neutron field.Neutron detection is the effective detection of neutrons entering a well-positioned are two key aspects to effective neutron detection: hardware and software.

Detection hardware refers to the kind of neutron detector used (the most common today is the scintillation detector) and to the electronics used in the detection r, the hardware setup also defines key.

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