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Harry K. Daghlian, Jr.
Haroutune Krikor Daghlian, Jr., (May 4, 1921 – September 15, 1945) was a physicist with the Manhattan Project, the effort to create atomic bombs during World War II. He accidentally irradiated himself on August 21, 1945, during a critical mass experiment at the remote Omega Site facility at the Los Alamos Laboratory in New Mexico, resulting in his death 25 days later.
Daghlian was irradiated as a result of a criticality accident that occurred when he accidentally dropped a tungsten carbide brick onto a 6.2 kg plutonium-gallium alloy bomb core. This core, subsequently nicknamed the "demon core", was also involved in the death of another physicist, Louis Slotin, in an accident the following year, before it was used in the Operation Crossroads series of nuclear weapon tests.
==Early life==
Haroutune Krikor (Harry) Daghlian, Jr., of Armenian American extraction, was born in Waterbury, Connecticut, on May 4, 1921, one of three children of Margaret Rose (''née'' Currie) and Haroutune Krikor Daghlian. He had a sister, Helen, and a brother, Edward.〔(【引用サイトリンク】title=Harry K. Daghlian )〕 Soon after his birth the family moved across state to the coastal town of New London, Connecticut. He was educated at Harbor Elementary School, where he played violin in the school orchestra, and at Bulkeley High School. In 1938, at the age of 17, he entered the Massachusetts Institute of Technology, intending to study mathematics, but became interested in physics, particularly particle physics, then emerging as an exciting new field. This led him to transfer to the West Lafayette, Indiana, campus of Purdue University, which graduated him in 1942 with a bachelor of Science degree. He then commenced work on his doctorate, assisting Marshall Holloway with the cyclotrons. In 1944, while still a graduate student, he joined Otto Frisch's Critical Assembly Group at the Los Alamos Laboratory of the Manhattan Project.〔(【引用サイトリンク】title=Harry Daghlian )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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