Direct Observation of Effective Temperature of Ta Atom in Layer Compound TaS<sub>2</sub>   by Neutron Resonance Absorption Spectrometer

Tokuda, Koji; Kamiyama, Takashi; Kiyanagi, Yoshiaki; Moreh, R.; Ikeda, Susumu

doi:10.1143/jjap.40.1504

Cited by 19 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, a number of detector technologies were developed over the years at HUNS, including 2D position-sensitive neutron detectors, [94][95][96][97][98][99] a wavelength-shifting fiber detector, [99] direct-readout pixel-type detectors, [98,100] a boron-type GEM detector, [101] and a neutron image intensifier. [101] A neutron resonance absorption spectroscopy system is also available at HUNS [102] which uses lithium-glass scintillator pixel-type detectors for neutron absorption spectrum recording and BaF2 scintillation detectors for prompt gamma-ray measurements.…”

Section: Neutron Detectorsmentioning

confidence: 99%

Research opportunities with compact accelerator-driven neutron sources

et al. 2016

View full text Add to dashboard Cite

Since the discovery of the neutron in 1934 neutron beams have been used in a very broad range of applications, As an aging fleet of nuclear reactor sources is retired the use of compact accelerator-driven neutron sources (CANS) are becoming more prevalent. CANS are playing a significant and expanding role in research and development in science and engineering, as well as in education and training. In the realm of multidisciplinary applications, CANS offer opportunities over a wide range of technical utilization, from interrogation of civil structures to medical therapy to cultural heritage study. This paper aims to provide the first comprehensive overview of the history, current status of operation, and ongoing development of CANS worldwide. The basic physics and engineering regarding neutron production by accelerators, target-moderator systems, and beam line instrumentation are introduced, followed by an extensive discussion of various evolving applications currently exploited at CANS.

show abstract

Section: Neutron Detectorsmentioning

confidence: 99%

Research opportunities with compact accelerator-driven neutron sources

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The method enables us to investigate motions of a particular nuclide, because we can identify it by the resonance energies [1,2]. Some of the resonance absorption cross sections are very large values, 73 Ta has 13,000 barns at 4.28 eV for example, then the method has very high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Remote-sensing, Non-destructive, and Computed-tomography-assisted Thermometry by Neutron Resonance Absorption Spectroscopy

Kamiyama¹,

Noda²,

Ito³

et al. 2005

Journal of Neutron Research

View full text Add to dashboard Cite

We applied the method of neutron resonance absorption spectroscopy to thermometric measurements of a bulk object. Through an analysis of the resonance absorption spectrum of imbedded neutron-absorbing nuclides, the "effective temperature", which coincides with the actual local temperature near and above room temperature, can be determined. If a thermal gradient exists, computed tomography techniques could be used in conjunction with the analysis for a reconstruction of the temperature distribution over a planar cross-sectional area. We find that the experimental data agree with the temperature profile calculated from the heat conduction equations. The measurements were carried out using the neutron resonance absorption spectrometer DOG of KENS, Japan. The overall results demonstrated the feasibility of this method for industrial applications where remote-sensing and non-destructive temperature mapping of bulk objects is necessary.

show abstract

“…J-PARC [51] and ISIS [42] also have performed neutron resonance temperature measurements. These methods can be applied with this setup after selecting a region of interest from a radiographic or tomographic characterization, e.g., an inclusion or the most homogeneous volume within a sample to measure temperature or chemistry most reliably.…”

Section: Instrument Setupmentioning

confidence: 99%

Neutron Imaging at LANSCE—From Cold to Ultrafast

et al. 2018

View full text Add to dashboard Cite

(Lujan center), Flight Path 5 beam line and continues to be refined. Applications include: imaging of metallic and ceramic nuclear fuels, fission gas measurements, tomography of fossils and studies of dopants in scintillators. The technique provides the ability to characterize materials opaque to thermal neutrons and to utilize neutron resonance analysis codes to quantify isotopes to within 0.1 atom %. The latter also allows measuring fuel enrichment levels or the pressure of fission gas remotely. More recently, the cold neutron spectrum at the ASTERIX beam line, also located at Target 1, was used to demonstrate phase contrast imaging with pulsed neutrons. This extends the capabilities for imaging of thin and transparent materials at LANSCE. In contrast, high-energy neutron imaging at LANSCE, using unmoderated fast spallation neutrons from Target 4 [Weapons Neutron Research (WNR) facility] has been developed for applications in imaging of dense, thick objects. Using fast (ns), time-of-flight imaging, enables testing and developing imaging at specific, selected MeV neutron energies. The 4FP-60R beam line has been reconfigured with increased shielding and new, larger collimation dedicated to fast neutron imaging. The exploration of ways in which pulsed neutron beams and the time-of-flight method can provide additional benefits is continuing. We will describe the facilities and instruments, present application examples and recent results of all these efforts at LANSCE.

show abstract

Direct Observation of Effective Temperature of Ta Atom in Layer Compound TaS₂ by Neutron Resonance Absorption Spectrometer

Cited by 19 publications

References 9 publications

Research opportunities with compact accelerator-driven neutron sources

Research opportunities with compact accelerator-driven neutron sources

Remote-sensing, Non-destructive, and Computed-tomography-assisted Thermometry by Neutron Resonance Absorption Spectroscopy

Neutron Imaging at LANSCE—From Cold to Ultrafast

Contact Info

Product

Resources

About

Direct Observation of Effective Temperature of Ta Atom in Layer Compound TaS2 by Neutron Resonance Absorption Spectrometer

Cited by 19 publications

References 9 publications

Research opportunities with compact accelerator-driven neutron sources

Research opportunities with compact accelerator-driven neutron sources

Remote-sensing, Non-destructive, and Computed-tomography-assisted Thermometry by Neutron Resonance Absorption Spectroscopy

Neutron Imaging at LANSCE—From Cold to Ultrafast

Contact Info

Product

Resources

About

Direct Observation of Effective Temperature of Ta Atom in Layer Compound TaS₂ by Neutron Resonance Absorption Spectrometer