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Set of foil targets from the 35 MeV Linac


This is a set of twenty aluminum frames, each of which is approximately 10.7 cm x 5.6 cm.

Each frame contains either two or three windows that house thin foil sheet. Many of these windows are empty, of the foil is damaged. Each plate has been marked with an identification number in black permanent marker.

The the frames are held in plastic support that is likely made from a microscope slide case. These plastic supports have been glued to an iron alloy plate. Each foil has three rectangular apertures, some covered by aluminum foil.

Accession Number:

Alternative Name:

Primary Materials: Aluminum, plastic, steel alloy.


Each aluminum plate has been marked in the front surface with an identification number, such as “G12-1”, in black . Some of them feature numbers followed by the kilowatt symbol (kw), or the Angstrom symbol (Å).

Dimensions (cm):

The steel plate is width = 15.5 cm, length = 2.5 cm. Each aluminum plate is height = 10.7 cm, width = 5.6 cm.


These foil targets may have been used to study the electron-induced fission of elements on the U of T’s 35 MeV Linac.


Good: There is minor tarnishing on the surface of each plate. Some of the aluminum foils have been damaged. The iron alloy plate is heavily oxidized.

Associated Instruments:

Manufacturer: IsoTrace

Date of Manufacture: c. 1965 – 1978


The origin of these artefacts is unknown. The best guess is that they are related to a long series of experiments done on the 35 MeV Linac. These may be relatively early in that series.

These experiments involved the electron-induced fission of elements.

Additional Information and References:

Historical Notes: