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Union of the Physicists in Bulgaria
Memoirs

Created:05.1.2011
Updated:29.3.2019

Biography
RAZUM EKIMOV ANDREJCHIN
(09.04.191126.09.1997)

Born: Razum Ekimov Andrejchin has born in Gabrovo

Education:

He was a schoolboy in the Secondary School, created by Vasil Aprilov in Gabrovo, and a student in the Sofia University (19291933), where he become Professor Georgi Nadjakov's PhD student in physics (1940)

Research:

He investigated solid state physics and metrological problems mainly

Professional experience:

Razum Andrejchin was Assistant Professor (05.04.193703.05.1946), Associate Professor (25.02.1947), Research Fellow (01.03.1950), Professor (1961) and Researcher (1967)

Sofia University appointed him to assistant position in physics (05.04.19371941) and in astronomy (194131.05.1946)

Razum Andrejchin was Deputy-Director of the Institute of Physics at the Bulgarian Academy of Sciences (19521957)

Up to be pensioned off (1976) Razum Andrejchin worked in the Institute of Solid State Physics at the Bulgarian Academy of Sciences

Teaching activities:

Razum Andrejchin lectured physics at the Russe High Technical School (19471949) and later on at the Sofia University (19501957).

Razum Andrejchin was chief of the Physics Department at the Agriculture Academy in Sofia, where he lectured special courses on photo-electrical phenomena in semi-conductors and semi-conductor devices (01.01.1962). He built agricultural physics laboratory

He created Department of physics at the Technical University in Gabrovo and lectured there course "physics of semi-conductors" (19741978)

Publications:

  1. R. Andrejchin, Uber einen photovoltaischen Effekt in aufgedampften Bleisulfidschichten, Festkorperphys. und Phys. Leuchtstoffe, Berlin, 1958, s. 94-97 [1]

  2. R. Andrejchin, Uber den Kontaktpotential-Photo-EMK, Festkorperphysik, Berlin, 1961, s. 280-289 [1]

  3. R. Andrejchin, M. Nikiforova, A. Ivanov, U. Stanislavova, Photovoltaischer Quereffekt im monokristallinen System CdSxSe1-x, Physica Status Solidy, Berlin, v. 3, Nr. 8, K280-K283 [1]

References:

  1. 18691969, . 3, , 1972, . 30-33

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