Improvement of Neutron Diffraction at Compact Accelerator-driven Neutron Source RANS Using Peak Profile Deconvolution and Delayed Neutron Reduction for Stress Measurements

A conceptual design of a powder diffractometer for a compact neutron source DARIA based on a linear proton accelerator is presented. The proposed concept extends the possibilities of optimizing the device performance not only by varying the diffractometer parameters, but also the neutron source parameters, such as the moderator temperature, repetition rate, and duration of neutron pulses. The results of calculating the spectrum of the target assembly for different types of moderators are presented. The efficiency of the neutron source system for increasing the neutron flux on the sample is evaluated in the McStas software package. The calculation results show the principal possibility of implementing the neutron diffraction method under conditions of limited luminosity of the compact neutron source.

show abstract

Pseudo-random time modulation technique for neutron diffraction instruments on compact accelerator-driven neutron sources

Ott

2023

JNR

View full text Add to dashboard Cite

Time modulation methods are routinely used on neutron scattering time-of-flight instruments, which exploit the time structure of neutron pulses for energy determination. In the past, complex time modulation methods were proposed, either to maximize the neutron flux which can be used, or to increase the energy resolution of the measurements. In this article, we explore the possibilities offered by such methods and in particular random modulation using statistical choppers to improve the performances of the DIoGENE scattering instrument installed around the IPHI-neutron CANS source at Saclay. We conclude that when the source is operated in continuous mode, the implementation of a statistical chopper is very efficient to perform either metallurgical studies such as strain scanning or phase transition studies. Random modulation techniques may be easily and efficiently implemented because the high capacity of modern computers enables high-speed data processing from large surface pixelated detectors.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Improvement of Neutron Diffraction at Compact Accelerator-driven Neutron Source RANS Using Peak Profile Deconvolution and Delayed Neutron Reduction for Stress Measurements

Cited by 5 publications

References 24 publications

Conceptual Design of a Time-of-Flight Powder Diffractometer for a Compact Neutron Source

Conceptual Design of a Time-of-Flight Powder Diffractometer for a Compact Neutron Source

Conceptual Design of a Time-of-Flight Powder Diffractometer for a Compact Neutron Source

Pseudo-random time modulation technique for neutron diffraction instruments on compact accelerator-driven neutron sources

Contact Info

Product

Resources

About