PETER HAASEN

1927–1993

BY ANTHONY KELLY

PETER HAASEN was professor of metal physics at the Georg August University of Göttingen for thirty-four years from 1959. During that time his influence spread worldwide into almost every aspect of the theory and practice of dislocation mechanics. His ideas and the beautiful experiments performed by him and his coworkers affect almost all of materials science/engineering.

Haasen was the exemplar of the great and justly well-known professor, respected and listened to worldwide. He was also a kindly man of great warmth and personal loyalty to all that he took up.

The eldest of four brothers, born to a father who practiced law in Germany, Haasen completed elementary schooling in Gotha (Thüringen) and entered the gymnasium there, leaving in 1944. He was conscripted into the German Wehrmacht and was captured at the end of the war. He has described vividly the steps he took to ensure that he was captured by the Americans.

The breadth and the depth of Haasen's work in applied physics can be appreciated by looking at the issue of Physica Status Solidi (a) 131, Number 2, pages 263–736, published in 1992, which contains papers all dedicated to him on the occasion of his sixty-fifth birthday. He developed the field of physical metallurgy, especially in Germany, as a particular scientific discipline. This meant always insisting on a direct explanation based on the concepts of physics and persisting with this however



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