In June 1941, Riewe co-authored a paper electron optics and plasma physics with the nuclear physicistFritz Houtermans. At this time, Houtermans is known to have been at the Forschungslaboratoriums für Elektronenphysik, a private laboratory of Manfred von Ardenne, in Berlin-Lichterfelde. The paper cites the two as being at a facility in Berlin; other papers by Riewe, three years earlier, cited him as being at a facility in the community of Berlin-Wilmersdorf, which is in the vicinity of Berlin-Lichterfelde.
In Russia
Near the close of World War II, the Soviet Union sent special search teams into Germany to locate and deport German nuclear scientists or any others who could be of use to the Soviet atomic bomb project. The Russian Alsos teams were headed by NKVD Colonel General A. P. Zavenyagin and staffed with numerous scientists, from their only nuclear laboratory, attired in NKVD officer's uniforms. The main search team, headed by Colonel General Zavenyagin, arrived in Berlin on 3 May, the day after Russia announced the fall of Berlin to their military forces; it included Colonel General V. A. Makhnjov, and nuclear physicists Yulij Borisovich Khariton, Isaak Konstantinovich Kikoin, and Lev Andreevich Artsimovich. Targets on the top of their list were the physics facilities in Berlin and its environs. Riewe was sent to the Russia to work on the Soviet atomic bomb project, at Heinz Pose's Laboratory V in Obninsk, either in the initial sweep by the special search teams or later by Pose's six-month recruitment trip, from March to August 1946, with NKVD General Kravchenko and two other officers. In 1948, two scientists at Laboratory V, Riewe and Dr. Renger, went on strike for reasons of their work conditions or hoping to be sent back to Germany after their two-year contracts expired. As their actions where while working on a defense project, they were accused of being ring-leaders of sabotage and imprisoned. Riewe received a sentence of 25 years in the Soviet GULAG and disappeared. Tamara Andrjuschenko recalled hearing that Riewe had been executed for sabotage.
Postscript
Riewe's widow moved to Sukhumi, where at that time there was workforce of 300 Germans working at Manfred von Ardenne's Laboratory A, in Sinop, a suburb of Sukhumi. She eventually married the German draftsman Willi Lange. In 1950, Lange, his wife, Lange's daughter Hannelora, and his wife's children by Riewe, moved to Sungul', where he worked at Nikolaus Riehl's Laboratory B, also known under another cover name, Объект 0211. After 1953, they were quarantined in the Agudzery transition camp, after which Germans returned to Germany.
Selected literature
Karl-Heinrich Riewe Über eine thermodynamische Berechnung der Ionisation, Zeitschrift für Physik, Volume 107, Issue 9-10, 680-682. The author is identified as being in Berlin-Wilmersdorf. Submitted 2 November 1937.
Karl-Heinrich Riewe Die Zustandssumme eines Dissoziationsvorganges, Zeitschrift für Physik Volume 109, Numbers 11-12, 753-757. The author is identified as being in Berlin-Wilmersdorf. Submitted 27 April 1938.
Karl-Heinrich Riewe Über eine neue thermodynamische Berechnung des Dissoziationsgrades, Zeitschrift für Physik Volume 110, Numbers 5-6, 393-394. The author is identified as being in Berlin-Wilmersdorf. Submitted 20 July 1938.
Fritz G. Houtermans and Karl-Heinrich Riewe Über die Raumladungswirkung an einem Strahl geladener Teilchen von rechteckigem Querschnitt der Blende, Archiv für Elektrotechnik Volume 35, Number 11, 686-691. The authors are identified as being in Berlin. Submitted 5 June 1941.
