DocumentCode
1061239
Title
Interferometric measurement of head/tape spacing in a high-speed R-DAT helical recorder
Author
Lacey, C.A. ; Talke, Frank E.
Author_Institution
Center for Magnetic Recording Res., California Univ., San Diego, CA, USA
Volume
27
Issue
6
fYear
1991
fDate
11/1/1991 12:00:00 AM
Firstpage
5091
Lastpage
5093
Abstract
Head/tape spacing in a high-speed R-DAT helical recorder was interferometrically measured using a replica head made of fiber-optic material. For the head tested, observation of white light fringes indicates that the region where head/tape spacing is less than 100 nm changes significantly as a function of tape tension in the range of 0.05 to 0.15 N. However, the small spacing region was not significantly affected by changes in scanner speed in the range from 2000 to 100000 RPM
Keywords
digital audio tape; magnetic heads; magnetic tape storage; fiber-optic material; head/tape spacing; high-speed R-DAT helical recorder; replica head; scanner speed; tape tension; white light fringes; Equations; Magnetic heads; Magnetic materials; Magnetic recording; Optical fibers; Optical interferometry; Optical materials; Optical surface waves; Phase shifting interferometry; Testing;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.278750
Filename
278750
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