Excited state positronium collisions with helium

Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

Volumn 266, Issue 3, 2008, Pages 506-510

  Starrett, C ^a   Walters, H R J ^a   McAlinden, Mary T ^b  

^a QUEEN'S UNIVERSITY BELFAST   (United Kingdom)

^b OXFORD BROOKES UNIVERSITY   (United Kingdom)

Author keywords

Discrete transitions; First born approximation; Helium; Impulse approximation; Ionization; Positronium

Indexed keywords

ATOMS; EXCITED STATES; GROUND STATE; HELIUM; IONIZATION;

DISCRETE TRANSITIONS; FIRST BORN APPROXIMATION;

POSITRONS;

EID: 39949085222     PISSN: 0168583X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.nimb.2007.12.032     Document Type: Article

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12. e = e = 1.
13. We take excited to mean both discrete excitation and ionization.
14. f at the discrete thresholds.