A high efficiency RF quadrupole ion beam cooler for negative ions

被引：15
|
作者：
Liu, Y. [1 ]
Liang, J. F. [1 ]
Beene, J. R. [1 ]
机构：
[1] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 255卷 / 02期
关键词：
buffer gas cooling; radiofrequency quadrupole; ion guide; negative ion beam;
D O I：
10.1016/j.nimb.2006.11.128
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A gas-tilled RF quadrupole ion beam cooler has been significantly improved for cooling negative ion beams. Electron detachment plays a significant role in determining the transmission of negative ions. It has been suggested that collisions with the residual buffer gas in the deceleration and injection region of the ion beam cooler, where the ions still possess relatively large energies, could result in substantial losses in negative ions due to electron detachment. The ion beam cooler is modified to improve the pumping conductance in the quadrupole entrance region for effectively removing the buffer gas and minimizing the residual gas escaping to the deceleration and injection region. This significantly reduces the collisions encountered by the ions before they are retarded to energies below the threshold for electron detachment. Overall transmission efficiencies of more than 50% have been obtained with the modified cooler for some negative ions. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：416 / 422
页数：7
相关论文
共 50 条
  • [1] Improving Negative Ion Beam Quality and Purity with a RF Quadrupole Cooler
    Liu, Y.
    SECOND INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES, 2011, 1390
  • [2] Purification of Radioactive Ion Beams by Photodetachment in a RF Quadrupole Ion Beam Cooler
    Liu, Y.
    Havener, C. C.
    Lewis, T. L.
    Galindo-Uribarri, A.
    Beene, J. R.
    NEGATIVE IONS, BEAMS AND SOURCES, 2009, 1097 : 431 - +
  • [3] Efficient Isobar Suppression by Photodetachment in a RF Quadrupole Ion Cooler
    Liu, Y.
    Havener, C. C.
    Lewis, T. L.
    Galindo-Uribarri, A.
    Beene, J. R.
    APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY, 2009, 1099 : 737 - +
  • [4] HIBISCUS: A new ion beam radio-frequency quadrupole cooler-buncher for high-precision experiments with exotic radioactive ions
    Jaries, A.
    Ruotsalainen, J.
    Kronholm, R.
    Eronen, T.
    Kankainen, A.
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2025, 1073
  • [5] Development of a radio-frequency quadrupole cooler for high beam currents
    Boussaid, Ramzi
    Ban, G.
    Quemener, G.
    Merrer, Y.
    Lorry, J.
    PHYSICAL REVIEW ACCELERATORS AND BEAMS, 2017, 20 (12):
  • [6] INVESTIGATION OF THE PRODUCTION OF SINGLY CHARGED IONS IN A RF QUADRUPOLE ION TRAP
    SCHUESSLER, HA
    HOLDER, CH
    JOURNAL OF APPLIED PHYSICS, 1979, 50 (08) : 5110 - 5114
  • [7] GENERATION AND CONTAINMENT OF MULTIPLY CHARGED IONS IN A RF QUADRUPOLE ION TRAP
    SCHWEBEL, C
    MOLLER, PA
    MANH, PT
    REVUE DE PHYSIQUE APPLIQUEE, 1975, 10 (04): : 227 - 239
  • [8] Study on negative ions prepared in situ in a quadrupole ion trap
    Gregoire, S
    Mathurin, JC
    March, RE
    Tabet, JC
    CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1998, 76 (04): : 452 - 463
  • [9] RF QUADRUPOLE BEAM DYNAMICS
    STOKES, RH
    STOVALL, JE
    SWENSON, DA
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1979, 24 (02): : 161 - 161
  • [10] RF QUADRUPOLE BEAM DYNAMICS
    STOKES, RH
    CRANDALL, KR
    STOVALL, JE
    SWENSON, DA
    IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1979, 26 (03) : 3469 - 3471
12345