Pulsed-neutron monochromator

Patent · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5270488

Mook, Jr, H A

In one aspect, the invention is an improved pulsed-neutron monochromator of the vibrated-crystal type. The monochromator is designed to provide neutron pulses which are characterized both by short duration and high density. A row of neutron-reflecting crystals is disposed in a neutron beam to reflect neutrons onto a common target. The crystals in the row define progressively larger neutron-scattering angles and are vibrated sequentially in descending order with respect to the size of their scattering angles, thus generating neutron pulses which arrive simultaneously at the target. Transducers are coupled to one end of the crystals to vibrate them in an essentially non-resonant mode. The transducers propagate transverse waves in the crystal which progress longitudinally therein. The waves are absorbed at the undriven ends of the crystals by damping material mounted thereon. In another aspect, the invention is a method for generating neutron pulses characterized by high intensity and short duration.

• DOE Contract Number: W-7405-ENG-26
• Assignee: EDB-84-037777
• Patent Number(s): None
• Application Number: ON: DE84006167
• OSTI ID: 5270488
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAMS
CRYSTALS
DESIGN
MECHANICAL VIBRATIONS
MONOCHROMATORS
NEUTRON BEAMS
NUCLEON BEAMS
PARTICLE BEAMS
PULSED NEUTRON TECHNIQUES