Alpha particle showing delta rays

Alpha particle showing delta rays

A132/0027 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Price image Pricing

Please login to use the price calculator


Caption: Photograph of the track of an alpha particle in a hydrogen-filled cloud chamber. The wispy side shoots are "delta rays" - electrons which the alpha has knocked out of atoms in its path. Only when an alpha comes very close to an atomic electron does the electron acquire sufficient velocity to form a short track of its own. Such "delta ray" electrons travel up to 2. 9 mm in this picture. Alpha particles, or alpha rays as they were originally known, are in fact the nuclei of helium atoms & consist of a particularly stable configuration of two protons & two neutrons.

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

Keywords: alpha ray, cloud chamber image, delta ray, electron, helium nucleus, particle physics, particles, photo, subatomic track, tracks

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