probe atom
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2013 ◽  
Vol 111 (14) ◽  
Author(s):  
Caspar F. Ockeloen ◽  
Roman Schmied ◽  
Max F. Riedel ◽  
Philipp Treutlein

2004 ◽  
Vol 19 (23) ◽  
pp. 3879-3896 ◽  
Author(s):  
SAVELY G. KARSHENBOIM

As an unstable light pure leptonic system, positronium is a very specific probe atom to test bound state QED. In contrast to ordinary QED for free leptons, the bound state QED theory is not so well understood and bound state approaches deserve highly accurate tests. We present a brief overview of precision studies of positronium paying special attention to uncertainties of theory as well as comparison of theory and experiment. We also consider in detail advantages and disadvantages of positronium tests compared to other QED experiments.


2000 ◽  
Vol 61 (5) ◽  
Author(s):  
Roberta Marani ◽  
Laurent Cognet ◽  
Veronique Savalli ◽  
Nathalie Westbrook ◽  
Christoph I. Westbrook ◽  
...  

1990 ◽  
Vol 60 (1-4) ◽  
pp. 651-653 ◽  
Author(s):  
Gary S. Collins ◽  
Steven L. Shropshire ◽  
Hwa-Jae Jang
Keyword(s):  

1986 ◽  
Vol 82 ◽  
Author(s):  
Thomas Wichert

ABSTRACTIn applications of the perturbed angular correlation (PAC) technique to the characterization of defect structures in materials conclusions are drawn from the local electric field gradient measured at the site of a radioactive probe atom. In metals, PAC has been very successful in labeling and identifying simple probe atom-defect pairs. Based on these results, new experiments were performed on defect structures in cold-worked samples, on the dynamics of He-defect interactions and on the growth of vacancy clusters. Recent results on interactions between the acceptor atom In and different donor atoms or intrinsic defects in Si indicate that PAC may provide atomistic information also in the case of semiconductor materials.


1983 ◽  
Vol 15 (1-4) ◽  
pp. 219-222 ◽  
Author(s):  
W. Semmler ◽  
H. Haas ◽  
H. -E. Mahnke ◽  
R. Sielemann
Keyword(s):  

1983 ◽  
Vol 15 (1-4) ◽  
pp. 223-226 ◽  
Author(s):  
H. -E. Mahnke ◽  
W. Semmler

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