Temperature and Pressure Control of Cold Helium Gas above Liquid Helium for Laser Spectroscopy of Atoms and Molecules at 3–30 K

2006 ◽  
Author(s):  
Yukari Matsuo ◽  
Yoshimitsu Fukuyama ◽  
Yoshiki Moriwaki
Science ◽  
1978 ◽  
Vol 202 (4364) ◽  
pp. 141-147 ◽  
Author(s):  
A. L. Schawlow

1979 ◽  
Vol 18 (7) ◽  
pp. 1341-1351
Author(s):  
Nobuhiro Ishihara ◽  
Osamu Araoka ◽  
Yoshikuni Doi ◽  
Takashi Kohriki ◽  
Kiyosumi Tsuchiya ◽  
...  

2014 ◽  
Vol 104 (13) ◽  
pp. 133511 ◽  
Author(s):  
H. Bai ◽  
S. T. Hannahs ◽  
W. D. Markiewicz ◽  
H. W. Weijers

Physica ◽  
1958 ◽  
Vol 24 (1-5) ◽  
pp. 59-67 ◽  
Author(s):  
A. van Itterbeek ◽  
W. de Laet

1979 ◽  
Author(s):  
M. Rasin Tek ◽  
Jack R. Elenbaas ◽  
Michael Whims ◽  
Joseph L. Roberts

2005 ◽  
Vol 83 (4) ◽  
pp. 357-361 ◽  
Author(s):  
R S Hayano

Laser spectroscopy of an antiprotonic helium ([Formula: see text]He+) atom, a neutral three-body Coulomb system consisting of an antiproton, a helium nucleus, and an electron has so far contributed to the determination of antiproton mass and charge to a precision of 10-8. Recently, we have succeeded in producing long-lived (τ [Formula: see text] 100 ns) antiprotonic helium ions (two-body system: [Formula: see text]He++). This was done by stopping ∼50 keV antiprotons decelerated by using an "inverse linac" (RFQD) in a very low-density helium gas target and selectively populating the ionic level by using laser tagging. It may be possible to use this two-body ion for future high-precision work.PACS Nos.: 36.10.–k, 34.90.+q, 25.43.+t


Physica ◽  
1953 ◽  
Vol 19 (1-12) ◽  
pp. 1158-1162 ◽  
Author(s):  
A. van Itterbeek ◽  
F.W. Schapink ◽  
G.J. van den Berg ◽  
H.J.M. van Beek

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