Space-charge effects in Penning ion traps

被引：5

作者：

Porobic, T. ^{[1
]}

Beck, M. ^{[5
]}

Breitenfeldt, M. ^{[1
]}

Couratin, C. ^{[3
]}

Finlay, P. ^{[1
]}

Knecht, A. ^{[1
,2
]}

Fabian, X. ^{[3
]}

Friedag, P. ^{[5
]}

Flechard, X. ^{[3
]}

Lienard, E. ^{[3
]}

Ban, G. ^{[3
]}

Zakoucky, D. ^{[4
]}

Soti, G. ^{[1
]}

Van Gorp, S. ^{[1
]}

Weinheimer, Ch. ^{[5
]}

Wursten, E. ^{[1
]}

Severijns, N. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Inst Kern Stralingsfys, B-3001 Louvain, Belgium

[2] CERN, PH Dept, CH-1211 Geneva 23, Switzerland

[3] Univ Caen, LPC Caen, ENSICAEN, CNRS,IN2P3, F-14070 Caen, France

[4] ASCR, Inst Nucl Phys, Rez 25068, Czech Republic

[5] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2015年 / 785卷

关键词：

Penning trap; Space-charge; Magnetron motion; Ion trapping; Buffer gas cooling; Ion cyclotron resonance; MASS-SPECTROMETRY; WITCH EXPERIMENT; FACILITY;

D O I：

10.1016/j.nima.2015.02.057

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The influence of space-charge on ion cyclotron resonances and magnetron eigenfrequency in a gas-filled Penning ion trap has been investigated. Off-line measurements with K-39(+) using the cooling trap of the WITCH retardation spectrometer-based setup at ISOLDE/CERN were performed. Experimental ion cyclotron resonances were compared with ab initio Coulomb simulations and found to be in agreement. As an important systematic effect of the WITCH experiment, the magnetron eigenfrequency of the ion cloud was studied under increasing space-charge conditions. Finally, the helium buffer gas pressure in the Penning trap was determined by comparing experimental cooling rates with simulations. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：153 / 162

页数：10

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