Coherent positronium molecule Psn and scanning clustering microscopy

✍ Scribed by Hidetsugu Ikegami

• Book ID: 101253930
• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 303 KB
• Volume: 71
• Category: Article
• ISSN: 0020-7608
• DOI: 10.1002/(sici)1097-461x(1999)71:1<83::aid-qua9>3.0.co;2-i

✦ Synopsis

The remarkable coherent features are indicated for the positronium molecules Ps , which are the lightest molecular system in the universe. The majority of n Ps molecules undergo the coherent annihilation of all constituent Ps atoms yielding the n coherent n-pair photons which provide a unique method for observing Ps with n w identifying the order of clustering n. This leads to a new microscopy scanning clustering Ž .x microscopy SCM in which Ps molecules are formed from surface positrons and Ps n swarmed around a fine tip of a probe electrically biased with respect to a contacting matter surface to be investigated. It would open up new broad fields to study dynamical aspects of surface layer such as the catalytic activity on a subatomic scale. A method based on the Hunbury Brown᎐Twiss effect is also presented to determine the dimensions of Ps .