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摘要
En 中文
These notes contain speculations about interesting situations that might occur when two or more low-energy positrons interact with each other and/or with various forms of ordinary matter. Topics include many positrons compressed to high density at a field emission tip, a long-lived metastable cold neutral electron positron plasma in a box, dipositronium and other multipositron molecules, the positronium Bose-Einstein condensate, precision measurements on positronium cooled by a pulsed laser method, stimulated emission of annihilation radiation, head-on collisions of two positronium annihilation gamma-ray laser pulses, and possible uses for gamma-ray lasers.
Keyword:
BOSE-EINSTEIN CONDENSATION
LOW-ENERGY POSITRONS
WAVE 2-PHOTON EXCITATION
SLOW POSITRONS
ANNIHILATION RADIATION
ANGULAR-CORRELATION
BOUND-STATE
THIN-FILMS
REEMISSION MICROSCOPE
THERMAL-DESORPTION
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