Alpha particle tracks from radioactive source

Alpha particle tracks from radioactive source

A134/0007 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 37.3MB

Downloadable file size: 5.3MB

Price image Pricing

Please login to use the price calculator


Caption: A photographic emulsion impregnated with a radio- active thorium salt reveals the tracks of alpha particles when developed. As Ernest Rutherford & Frederick Soddy found in 1900-1902, the decay of thorium initiates a chain of decays. First one radioactive element is formed, then that decays to another, & so on. This is why the emulsion picture shows the tracks of two or more alpha particles emerging from the same spot: they are the result of successive stages in the decay of a single nucleus. (The length of the alpha tracks in this negative picture is about 0.03 mm).

Release details: Model release not required. Property release not required.

Keywords: alpha particle, black and white, black-and-white, emulsion photo, emulsion photograph, image, monochrome image, particle, particle physics, particles, photographic, radioactivity, subatomic track, thorium, tracks

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.