Published April 1, 1987
| Version v1
Journal article
Time-of-flight spectroscopy of positronium emission from quartz and magnesium oxide
Creators
- 1. Department of Physics, Brandeis University, Waltham, Massachusetts 02254
Description
The energy distribution of Ps emitted from SiO2 and MgO single crystals bombarded by 500--900-eV positrons was measured. For SiO2 a nearly monoenergetic component at 3.27(4) is observed and is consistent with a bulk excitonlike Ps emitted from the surface. A broader component of ∼1.5 eV full width at half maximum is also observed. For MgO the Ps spectrum is characterized by a high-energy tail extending up to 6--7 eV. Possible models which would explain the MgO results are discussed
Additional details
Publishing Information
- Journal Title
- Phys. Rev., B: Condens. Matter
- Journal Volume
- 35
- Journal Issue
- 10
- Series
- Phys. Rev., B: Condens. Matter.
- Journal Page Range
- 5315-5318
- ISSN
- 0163-1829
- CODEN
- PRBMD
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19015042
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Descriptors DEI
- EMISSION; ENERGY SPECTRA; EV RANGE 100-1000; MAGNESIUM OXIDES; MONOCRYSTALS; POSITRON BEAMS; POSITRON COLLISIONS; POSITRONIUM; SILICON OXIDES; TIME-OF-FLIGHT METHOD; ULTRAHIGH VACUUM
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BEAMS; CHALCOGENIDES; COLLISIONS; CRYSTALS; ENERGY RANGE; EV RANGE; LEPTON BEAMS; MAGNESIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PARTICLE BEAMS; SILICON COMPOUNDS; SPECTRA