STUDIES OF THE FOCUSING PROPERTIES OF A SPACE CHARGE LENS

QIU Hong; CHEN Jian-Pu; XU Jian-Ming

Chinese Physics C> 1983, Vol. 7> Issue(5) : 583-588

STUDIES OF THE FOCUSING PROPERTIES OF A SPACE CHARGE LENS

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Abstract：
A space charge lens has been designed and tested which can be used to focus intense ion beams at several tens of keV. The experimental results obtained can be interpreted with a simplified physical model. The existence of a space charge field and its strong focusing properties are tested experimentally. And it is shown that the relaxation time for the formation of space charge field is much less than 10 μs under our experimental conditions, thus the lens can be used to focus pulsed beams with length of several hundereds of μs of longer.

References

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B.Von Bowies, E. Ruaka, Z. Physik, 76(1932),649.[2] D. Gabor, Nature, 160(1947), 89.[3] А. И. Мороэов, Док. Акα Нαyк СССР., 163(1965), 1963.[4] С. В. Лебедев, А. И. Мороэов, Ж. Т. Ф., 36(1966), 960.[5] R. Booth, H. W. Lefevre, N. 1. M., 151(1978), 143.[6] H.W.Lefecre, R, Booth, IEEE. Trans., NS26(1979), 8115.[7] R. M. Mobley, G. Ganunel, A. W. Masehke, IEEE. Trans., N526(1979), 3112.

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[19]	FANG SHOU-XIAN . COMPENSATION OF THE SPACE CHARGE FORCE IN A SYNCHROTRON BY MEANS OF RF QUADRUPOLE. Chinese Physics C, 1981, 5(2): 169-175.
[20]	Yu Qing-chang . THEORY OF NONLINEAR SPACE-CHARGE EFFECTS OF LOW ENERGY INTENSE CHARGED PARTICLE BEAMS. Chinese Physics C, 1980, 4(5): 579-587.

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QIU Hong, CHEN Jian-Pu and XU Jian-Ming. STUDIES OF THE FOCUSING PROPERTIES OF A SPACE CHARGE LENS[J]. Chinese Physics C, 1983, 7(5): 583-588.

QIU Hong, CHEN Jian-Pu and XU Jian-Ming. STUDIES OF THE FOCUSING PROPERTIES OF A SPACE CHARGE LENS[J]. Chinese Physics C, 1983, 7(5): 583-588. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

STUDIES OF THE FOCUSING PROPERTIES OF A SPACE CHARGE LENS

Corresponding author: QIU Hong,

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1983-10-05

Abstract: A space charge lens has been designed and tested which can be used to focus intense ion beams at several tens of keV. The experimental results obtained can be interpreted with a simplified physical model. The existence of a space charge field and its strong focusing properties are tested experimentally. And it is shown that the relaxation time for the formation of space charge field is much less than 10 μs under our experimental conditions, thus the lens can be used to focus pulsed beams with length of several hundereds of μs of longer.