A new high-resolution, high-intensity apparatus for the study of Fermi surfaces of alloys by positron annihilation

1977 ◽  
Vol 44 (2) ◽  
pp. 669-673 ◽  
Author(s):  
H. P. Fischer ◽  
K. H. Steinmetz ◽  
E. Nembach
Keyword(s):  
High Resolution ◽  
Positron Annihilation ◽  
High Intensity ◽  
Fermi Surfaces

A study of Fermi surfaces of the α-phase Cu-Ge and Cu-Si alloys by positron annihilation

1974 ◽  
Vol 5 (3) ◽  
pp. 269-274 ◽  
Author(s):  
Toshiharu Suzuki ◽  
Masayuki Hasegawa ◽  
Makoto Hirabayashi
Keyword(s):  
Positron Annihilation ◽  
Fermi Surfaces ◽  
Α Phase

High resolution positron-annihilation spectroscopy with a new positron microprobe

1997 ◽  
Vol 71 (15) ◽  
pp. 2115-2117 ◽  
Author(s):  
H. Greif ◽  
M. Haaks ◽  
U. Holzwarth ◽  
U. Männig ◽  
M. Tongbhoyai ◽  
...  
Keyword(s):  
High Resolution ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy

Positron state and Lifetime in C60/C70 Fullerites

1992 ◽  
Vol 270 ◽  
Author(s):  
H.-E. Schaefer ◽  
M. Forster ◽  
R. WÜrschum ◽  
F. Banhart
Keyword(s):  
Electron Microscopy ◽  
Hydrostatic Pressure ◽  
High Resolution ◽  
Positron Annihilation ◽  
Positron Lifetime ◽  
High Resolution Electron Microscopy ◽  
Lattice Defects ◽  
Lifetime Measurements ◽  
Resolution Electron ◽  
Positron State

ABSTRACTThe present paper reports on positron lifetime measurements on Ceo/C 70 fullerite powder as a function of temperature and quasi-hydrostatic pressure in order to give an estimate of the positron annihilation site in the fullerite lattice. A single-component positron lifetime of 402 ps is observed which significantly decreases under quasi-hydrostatic pressure. From this and the soft intermolecular properties of the fullerites one can conclude that the positron is annihilated rather in the intermolecular space than inside the fullerene molecules. However, positron trapping at lattice defects, which are observed by high-resolution electron microscopy, cannot be ruled out.

Fermi Surfaces of Copper-Aluminum Alloys by Positron Annihilation

1968 ◽  
Vol 24 (3) ◽  
pp. 467-475 ◽  
Author(s):  
Kunio Fujiwara ◽  
Osamu Sueoka ◽  
Tōru Imura
Keyword(s):  
Aluminum Alloys ◽  
Positron Annihilation ◽  
Fermi Surfaces ◽  
Copper Aluminum

Demonstration of the superconducting electron accelerator as a high‐intensity high‐resolution device

1973 ◽  
Vol 22 (11) ◽  
pp. 605-607 ◽  
Author(s):  
M.S. McAshan ◽  
K. Mittag ◽  
H.A. Schwettman ◽  
L.R. Suelzle ◽  
J.P. Turneaure
Keyword(s):  
High Resolution ◽  
High Intensity ◽  
Electron Accelerator
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