NDLI: 6.4 GHz ECR ion source at VECC

Content Provider	Springer Nature Link
Author	Taki, G S Chakraborty, D K Bhandari, R K
Copyright Year	2002
Abstract	The 6.4 GHz ECR ion source that was indigenously developed a few years ago has been operating continuously for injecting oxygen and neon beams to the cyclotron since 1997. VEC-ECR is a single stage high magnetic field ion source provided with a negatively biased electron repeller placed on the axis, near the injection mirror point. The supply of cold electrons and use of low mass mixing gas improve the stability of ECR plasma. Very recently, the effect of aluminum oxide coating on the copper plasma chamber wall has been studied. The plasma chamber wall was coated with aluminum by vacuum evaporation method and then exposed to oxygen gas to form aluminum oxide. It was noticed that the process substantially shifts the charge state distribution to the higher charge state with an enhancement of ion current by an order of magnitude. With the aluminized plasma chamber, the VEC-ECR can now produce 12 µA of O$^{7+}$, 6.5 µA of Ar$^{12+}$, 1.5 µA of Kr$^{20+}$ and 1.0 µA of Xe$^{31+}$.
Starting Page	775
Ending Page	780
Page Count	6
File Format	PDF
ISSN	03044289
Journal	Pramana
Volume Number	59
Issue Number	5
e-ISSN	09737111
Language	English
Publisher	Springer India
Publisher Date	2002-01-01
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ECR ion source heavy ions Physics Astronomy Astrophysics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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6.4 GHz ECR ion source at VECC