Improving the resolution of chopper spectrometers at pulsed neutron sources

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6294537

Carpenter, J M ^[1]; Mildner, D F.R. ^[2]

---

1. Argonne National Lab., IL (USA)
2. National Bureau of Standards, Washington, DC (USA). Center for Analytical Chemistry

We examine the relationships between intensity and resolution in pulsed-source chopper spectrometers, including the effects of Soller collimation, narrower rotor slits and higher rotor speeds. The basis is a simplified description of a spectrometer, approximately optimizing the rotor pulse and lighthouse effects. the analysis includes a new treatment of the angular distribution transmitted through a system consisting of a coarse collimator and a Soller collimator. The results encourage the prospect for a reasonably easily accomplished, higher resolution, optional configuration of the pulsed source chopper spectrometers at IPNS. 6 refs., 5 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6294537
• Report Number(s): CONF-9010243-15; ON: DE91007655
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATORS
ANGULAR DISTRIBUTION
BEAM PULSERS
CYCLIC ACCELERATORS
DISTRIBUTION
ENERGY RESOLUTION
IPNS-I SYNCHROTRON
MATHEMATICAL SPACE
MEASURING INSTRUMENTS
MODIFICATIONS
NEUTRON CHOPPERS
NEUTRON SOURCE FACILITIES
NEUTRON SOURCES
NEUTRON SPECTROMETERS
PARTICLE SOURCES
PHASE SPACE
PULSED NEUTRON TECHNIQUES
RADIATION SOURCES
RESOLUTION
SPACE
SPECTROMETERS
SYNCHROTRONS
TIME-OF-FLIGHT SPECTROMETERS