A new cooling technique for heavy ions in a Penning trap

A new cooling technique for heavy ions stored in a Penning trap has been developed. The axial and cyclotron motions are cooled by buffer gas collisions. The outward radial diffusion caused by the buffer gas is counteracted by an azimuthal quadrupole rf field at the sum frequency of the magnetron and...

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Bibliographic Details
Published inPhysics letters. A Vol. 158; no. 5; pp. 247 - 252
Main Authors Savard, G., Becker, St, Bollen, G., Kluge, H.-J., Moore, R.B., Otto, Th, Schweikhard, L., Stolzenberg, H., Wiess, U.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 02.09.1991
Elsevier Science
Subjects
Atomic and molecular collision processes and interactions
Atomic and molecular physics
Exact sciences and technology
Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions
Physics
Theoretical study
Gases
Molecule molecule collision
Equation of motion
Experimental study
Energy distribution
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Summary:A new cooling technique for heavy ions stored in a Penning trap has been developed. The axial and cyclotron motions are cooled by buffer gas collisions. The outward radial diffusion caused by the buffer gas is counteracted by an azimuthal quadrupole rf field at the sum frequency of the magnetron and cyclotron motions. A mass selectivity of 500 in the cooling is achieved while the axial energy distribution is observed to be in equilibrium with the buffer gas temperature ( T = 300 K).
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(91)91008-2