On-line ion cooling and bunching for collinear laser spectroscopy.
A new method has been developed for increasing the sensitivity of collinear laser spectroscopy. The method utilizes an ion-trapping technique in which a continuous low-energy ion beam is cooled and accumulated in a linear Paul trap and subsequently released as a short (10-20 micros) bunch. In collinear laser measurements the signal-to-noise ratio has been improved by a factor of 2 x 10(4), allowing spectroscopic measurements to be made with ion-beam fluxes of approximately 50 ions s(-1). The bunching method has been demonstrated in an on-line isotope shift and hyperfine structure measurement on radioactive (175)Hf.
Nieminen
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A
Department of Physics, University of Jyväskylä, PB 35 (YFL) FIN-40351 Jyväskylä, Finland.
Campbell
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P
Billowes
J
J
Forest
D H
DH
Griffith
J A R
JA
Huikari
J
J
Jokinen
A
A
Moore
I D
ID
Moore
R
R
Tungate
G
G
Aystö
J
J