U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 69551 - 69575 of 74337

Measurement of the Surface Density of States by Field Ionization

October 1, 1975
Author(s)
David R. Penn
It is shown that recent measurements of field ion energy distributions from clean tungsten surfaces probe the density of metal states in the vicinity of the surface. We find j() = (2/kh)m| d3rm(r) z|2(-m), where j() is the ion current a , mand m are

Data Storage in the Cerebellar Model Articulation Controller (CMAC)1

September 30, 1975
Author(s)
James S. Albus
The storage of manipulator control functions in the CMAC memory is accomplished by an iterative process which, if the control function is sufficiently smooth, will converge. There are several different techniques for loading the CMAC memory depending on

Observation of Excited States in Ozone Near the Dissociation Limit

September 22, 1975
Author(s)
Nils Swanson, Robert Celotta
Several calculations suggest that the lowest triplet states of ozone lie near the dissociation limit. Using electron energy-loss spectroscopy, we have observed a broad feature beginning at 1.3 eV, with a maximum at 1.65-eV energy loss. This structure is
Displaying 69551 - 69575 of 74337
Was this page helpful?