In particle and nuclear physics, a nuclear emulsion plate is a photographic plate with a particularly thick emulsion layer and with a very uniform grain size. Like bubble chambers, cloud chambers, and wire chambers nuclear emulsion plates record the tracks of charged particles passing through. They are compact, have high density and produce a cumulative record, but have the disadvantage that the plates must be developed before the tracks can be observed.
Nuclear emulsions can be used to record and investigate fast charged particles like nucleons or mesons. After exposing and developing the plate, single particle tracks can be observed and measured using a microscope.
In 1937, Marietta Blau and Hertha Wambacher discovered nuclear disintegration stars due to spallation in nuclear emulsions that had been exposed to cosmic radiation at a height of 2,300 metres (≈7,500 feet) above sea level.
Using nuclear emulsions exposed on high mountains, Cecil Frank Powell and coworkers discovered the pion in 1947.
In biology and medicine, nuclear emulsion is used in autoradiography to locate radioactive labels in samples of cells and tissues.
Other articles related to "nuclear emulsion, nuclear":
... transition to high energy physics and form a collaboration with her husband working on nuclear emulsion ... The Goldhabers hoped to use their nuclear emulsion technique with the newly opened Bevatron — at the time the highest energy accelerator in operation — and it was through their methods that they observed some of ... Using the Bevatron and the nuclear emulsion technique Goldhaber was the first to observe mass splitting in charged E hyperons as well as the first nuclear interactions of the antiproton ...
Famous quotes containing the word nuclear:
“The problems of the world, AIDS, cancer, nuclear war, pollution, are, finally, no more solvable than the problem of a tree which has borne fruit: the apples are overripe and they are fallingwhat can be done?... Nothing can be done, and nothing needs to be done. Something is being donethe organism is preparing to rest.”
—David Mamet (b. 1947)