The Columbia University Sub-micron Charged Particle Beam.
The Columbia University Sub-micron Charged Particle Beam.
复制标题
DOI:
10.1016/j.nima.2009.08.041
复制
发表时间:
2009-10-11
影响因子:
1.4
通讯作者:
Brenner, David J.
中科院分区:
文献类型:
--
作者:
Randers-Pehrson, Gerhard;Johnson, Gary W.;Marino, Stephen A.;Xu, Yanping;Dymnikov, Alexander D.;Brenner, David J.
A lens system consisting of two electrostatic quadrupole triplets has been designed and constructed at the Radiological Research Accelerator Facility (RARAF) of Columbia University. The lens system has been used to focus 6-MeV 4He ions to a beam spot in air with a diameter of 0.8 µm. The quadrupole electrodes can withstand voltages high enough to focus 4He ions up to 10 MeV and protons up to 5 MeV. The quadrupole triplet design is novel in that alignment is made through precise construction and the relative strengths of the quadrupoles are accomplished by the lengths of the elements, so that the magnitudes of the voltages required for focusing are nearly identical. The insulating sections between electrodes have had ion implantation to improve the voltage stability of the lens. The lens design employs Russian symmetry for the quadrupole elements.
登录
查看更多内容
DOI:
10.1016/0168-9002(93)90563-w
发表时间:
1993-06-20
影响因子:
1.4
作者:
DYMNIKOV, A;HELLBORG, R
通讯作者:
HELLBORG, R
DOI:
10.1016/j.nimb.2005.01.052
发表时间:
2005-04-01
影响因子:
1.3
作者:
van Kan, JA;Shao, PG;Watt, F
通讯作者:
Watt, F
DOI:
10.1016/j.nimb.2007.01.253
发表时间:
2007-07-01
影响因子:
1.3
作者:
Imaseki, Hitoshi;Ishikawa, Takahiro;Yukawa, Masae
通讯作者:
Yukawa, Masae
DOI:
10.1016/s0168-583x(01)00547-x
发表时间:
2001-07-01
影响因子:
1.3
作者:
Jamieson, DN
通讯作者:
Jamieson, DN
DOI:
10.1016/s0168-583x(97)00369-8
发表时间:
1997-07-01
影响因子:
1.3
作者:
Legge, GJF
通讯作者:
Legge, GJF