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A Digital Programmer for the Heinrich Miniature Probe Attachment for an X-Ray Emission Spectrograph¹

ABSTRACT

A solid-state digital programmer was developed to drive a Heinrich miniature probe attachment for an X-ray emission spectrograph. This allowed the automated operation of the X-ray emission spectrograph during analysis of transects in a variety of studies such as: clay films associated with ionic diffusion, ionic distribution in plant tissue, etc.

¹ Contribution from the Dep. of Agronomy, Kentucky Agr. Exp. Sta., Lexington 40506. This paper (12-3-153) is published with the approval of the Kentucky Agr. Exp. Sta.

² Assoc. Prof. of Agronomy and Consultant Engineer, Instrumentation Section, respectively.

Received for publication January 29, 1973. Accepted for publication February 13, 1973.