@inbook {4145, title = {Muonium formation compared with positronium}, booktitle = {Positron Annihilation - Icpa-11 - Proceedings of the 11th International Conference on Positron Annihilation, Kansas City, Missouri, USA, May 1997}, series = {Materials Science Forum}, volume = {255-2}, year = {1997}, note = {ISI Document Delivery No.: BK31TTimes Cited: 3Cited Reference Count: 11Proceedings Paper11th International Conference on Positron Annihilation (ICPA-11)MAY 25-30, 1997KANSAS CITY, MISSOURIK L Cheng Trust Fund, Natl Sci Fdn, PHYS, Univ Missouri Kansas City, Dept Chem, Univ Missouri Kansas City, Coll Arts \& Sci, Univ Missouri Kansas City, Off Res Adm, Univ Missouri, Acad Affairs, EG\&G ORTECBRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND}, pages = {124-128}, publisher = {Transtec Publications Ltd}, organization = {Transtec Publications Ltd}, address = {Zurich-Uetikon}, abstract = {Whereas the spur model of positronium formation enjoys widespread acceptance, the analogous model for muonium does not. Recent data has emerged from studies of rare systems, such as the superfluid state of liquid helium, the a phase of solid nitrogen and liquid Ne, in which muonium atoms form in a {\textquoteright}delayed{\textquoteright} manner and with yields that are influenced by the application of longitudinal electric fields. Charge neutralization is evidently responsible for the formation of these muonium atoms; but, it is suggested here, the electrons involved have escaped the spurs. so these are extra-spur processes not intra-spur ones.}, keywords = {formation mechanism, muonium, POSITRONIUM, solid N-2, superfluid He}, isbn = {0255-54760-87849-779-X}, url = {://000071768100020}, author = {Walker, D. C.}, editor = {Jean, Y. C. and Eldrup, M. and Schrader, D. M. and West, R. N.} }