Polarization properties of irradiated ammonia (NH/sub 3/ and ND/sub 3/) at 1 K and 25 kG

Conference · Sat Jan 01 00:00:00 EST 1983 · AIP Conf. Proc.; (United States)

OSTI ID:6075887

Riechert, H

Dynamic nuclear polarization (DNP) of irradiated ammonia was examined in some detail at 1 K and 25 kG. It was attempted to gain information about the prevailing mechanism of DNP in this material. Therefore the frequency dependence of DNP in NH/sub 3/, of deuterons and unsubstituted protons in ND/sub 3/, as well as the polarizing time tau and the relaxation time T/sub 1/ in NH/sub 3/ were measured. The polarization measurements in ND/sub 3/ rule out the equal spin temperature (EST) behavior of proton and deuteron DNP that is observed in most of the currently used target materials. It is attempted to explain the observations with a differential solid state effect model. Results of calculations for NH/sub 3/ and ND/sub 3/ incorporating the measured EPR-spectra are presented. 7 references, 11 figures.

• Research Organization: Universitaet Bonn, West Germany
• OSTI ID: 6075887
• Report Number(s): CONF-820941-; TRN: 86-009532
• Journal Information: AIP Conf. Proc.; (United States), Vol. 95; Conference: 5. international symposium on high energy spin physics, Upton, NY, USA, 16 Sep 1982
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
AMMONIA
RADIOLYSIS
SPIN ORIENTATION
DEUTERIUM COMPOUNDS
ANGULAR MOMENTUM
BEAMS
ELECTRON BEAMS
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
HIGH ENERGY PHYSICS
MAGNETIC MOMENTS
MEETINGS
PARTICLE PROPERTIES
POLARIZED BEAMS
POLARIZED PRODUCTS
POLARIZED TARGETS
SPIN
ULTRALOW TEMPERATURE
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
LEPTON BEAMS
MAGNETIC RESONANCE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORIENTATION
PARTICLE BEAMS
PHYSICS
RADIATION CHEMISTRY
RADIATION EFFECTS
RESONANCE
TARGETS
430303* - Particle Accelerators- Experimental Facilities & Equipment