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Thirty-centimeter-diameter ion milling source

Journal Article · · J. Vac. Sci. Technol.; (United States)
DOI:https://doi.org/10.1116/1.569570· OSTI ID:6930402
A 30 cm beam diameter ion source has been designed and fabricated for micromachining and sputtering applications. An argon ion current density of 1 mA/cm/sup 2/ at 500 eV ion energy was selected as a design operating condition. The completed ion source met the design criteria at this operating condition with a uniform and well-collimated beam having an average variation in current density of +- 5% over the center of 20 cm of the beam. This ion source has a multipole magnetic field that employs permanent magnets between permeable pole pieces. Langmuir probe surveys of the source plasma support the design concepts of a multipole field and a circumferential cathode to enhance plasma uniformity.
Research Organization:
Colorado State University, Fort Collins, Colorado 80523
OSTI ID:
6930402
Journal Information:
J. Vac. Sci. Technol.; (United States), Journal Name: J. Vac. Sci. Technol.; (United States) Vol. 15:2; ISSN JVSTA
Country of Publication:
United States
Language:
English