Relations Between Focusing Power of Space-Charge Lenses and External Electromagnetic Fields

YU Qing-Chang; QIU Hong; HUANG Jia-Chang

Chinese Physics C> 1991, Vol. 15> Issue(1) : 13-16

Relations Between Focusing Power of Space-Charge Lenses and External Electromagnetic Fields

Institute of High Energy Physics,Academia Sinica,Beijing 100039

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Abstract：
Under different external electromagnetic fields,the electron densities of the electron cloud in a self-sustaining space-charge lens are measured with the radio-frequency method and the energy distributions of the ions produced in ionization are measured with the stopping field method.From them the relations between the focusing power of space-charge lenses and the external electromagnetic fields are determined.The available region of the Lebedev-Morozov formula is discussed.

References

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YU Qing-Chang, QIU Hong and HUANG Jia-Chang. Relations Between Focusing Power of Space-Charge Lenses and External Electromagnetic Fields[J]. Chinese Physics C, 1991, 15(1): 13-16.

YU Qing-Chang, QIU Hong and HUANG Jia-Chang. Relations Between Focusing Power of Space-Charge Lenses and External Electromagnetic Fields[J]. Chinese Physics C, 1991, 15(1): 13-16. 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

Relations Between Focusing Power of Space-Charge Lenses and External Electromagnetic Fields

Corresponding author: YU Qing-Chang,

Institute of High Energy Physics,Academia Sinica,Beijing 100039

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1991-01-05

Abstract: Under different external electromagnetic fields,the electron densities of the electron cloud in a self-sustaining space-charge lens are measured with the radio-frequency method and the energy distributions of the ions produced in ionization are measured with the stopping field method.From them the relations between the focusing power of space-charge lenses and the external electromagnetic fields are determined.The available region of the Lebedev-Morozov formula is discussed.