Atkins' Physical chemistry
Atkins' Physical chemistry
11th Edition
ISBN: 9780198814740
Author: ATKINS, P. W. (peter William), 1940- (author.)
Publisher: Oxford University Press,
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Chapter 19, Problem 19A.1ST
Interpretation Introduction

Interpretation:

The LEED pattern for a surface varies from given figure by tripling the vertical separation has to be sketched.

Expert Solution & Answer
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Explanation of Solution

In terms of the LEED pattern, the farther apart the aton1s responsible for the pattern, the closer the spots appear in the pattern. Twice the separation between the aton1s corresponds to half the separation between the spots, and vice versa.  When the vertical separation between two atoms is tripled, then the spots are thrice closer than after reconstruction.  The LEED pattern is given by

Atkins' Physical chemistry, Chapter 19, Problem 19A.1ST

Figure 1

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