Observation of Burst Frequency in Extracted ECR Ion Current

G.S.Taki<SUP>1</SUP>; P.R.Sarma<SUP>1</SUP>; A.G.Drentje<SUP>2</SUP>; T.Nakagawa<SUP>3</SUP>; P.K.Ray<SUP>4</SUP>; R.K.Bhandari<SUP>1</SUP>

Chinese Physics C> 2007, Vol. 31> Issue(S1) : 170-173

Observation of Burst Frequency in Extracted ECR Ion Current

Variable Energy Cyclotron Centre, Block-AF, Bidhannagar, Kolkata-700064, India2 Kernfysisch Versneller Instituut, Groningen, Netherlands3 Institute of Physical and Chemical Research RIKEN, Wakoshi-3510198, Japan4 Bengal Engineering and Science University, Shibpur, Howrah-711103, India

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Earlier we reported an ion current jump which was observed at a fixed negative biased disc potential in the 6.4GHz ECR ion source at VECC, Kolkata. In a recent experiment with neon ions, we measured the time spectra of the ion current and observed the presence of a burst frequency in the kilohertz range. This frequency shows a correlated jump with the ion current jump described above. Another interesting feature is that the observed burst frequency shows a good linear correlation with the extracted ion current. The higher the ion current, the higher is the burst frequency. This means that current per burst is a constant factor; when there are more number of bursts, the current also increases.

References

[1]

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G.S.Taki¹, P.R.Sarma¹, A.G.Drentje², T.Nakagawa³, P.K.Ray⁴ and R.K.Bhandari¹. Observation of Burst Frequency in Extracted ECR Ion Current[J]. Chinese Physics C, 2007, 31(S1): 170-173.

G.S.Taki¹, P.R.Sarma¹, A.G.Drentje², T.Nakagawa³, P.K.Ray⁴ and R.K.Bhandari¹. Observation of Burst Frequency in Extracted ECR Ion Current[J]. Chinese Physics C, 2007, 31(S1): 170-173. shu

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Received: 2007-05-30
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

Observation of Burst Frequency in Extracted ECR Ion Current

Variable Energy Cyclotron Centre, Block-AF, Bidhannagar, Kolkata-700064, India2 Kernfysisch Versneller Instituut, Groningen, Netherlands3 Institute of Physical and Chemical Research RIKEN, Wakoshi-3510198, Japan4 Bengal Engineering and Science University, Shibpur, Howrah-711103, India

Received Date: 2007-05-30

Accepted Date: 1900-01-01

Available Online: 2007-01-03

Abstract: Earlier we reported an ion current jump which was observed at a fixed negative biased disc potential in the 6.4GHz ECR ion source at VECC, Kolkata. In a recent experiment with neon ions, we measured the time spectra of the ion current and observed the presence of a burst frequency in the kilohertz range. This frequency shows a correlated jump with the ion current jump described above. Another interesting feature is that the observed burst frequency shows a good linear correlation with the extracted ion current. The higher the ion current, the higher is the burst frequency. This means that current per burst is a constant factor; when there are more number of bursts, the current also increases.

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Observation of Burst Frequency in Extracted ECR Ion Current

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