Credit: EQUINOX GRAPHICS/SCIENCE PHOTO LIBRARY

Caption: Radioactive gamma ray emission. Animation of a nucleus of americium-241 decaying to neptunium-237 by emitting an alpha particle and a gamma ray. An alpha particle is a high-energy helium nucleus, composed of two protons (red) and two neutrons (yellow). The gamma ray is a photon of very high energy electromagnetic radiation, which is emitted as the departure of the alpha particle leaves the resulting nucleus in a high-energy state. The nucleus emits the gamma ray to permit it to reach a more stable lower energy state. Americium-241 is used in smoke detectors, and has a half-life of 432 years.

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Keywords: am-241, americium-241, animated, animation, chain, decay, demonstration, education, educational, electromagnetic, emission, emitter, half life, half-life, helium, high energy, high-energy, ionising, ionizing, neptunium-237, neutron, neutrons, nuclei, nucleon, nucleons, nucleus, particle, particles, photon, physical, physics, proton, protons, radiation, radioactive, radioactivity, rays, smoke detector, unstable

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Radioactive gamma decay of americium-241

K002/9963 Rights Managed

Downloadable master

Duration: 00:00:22.01

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 689.4M

Original

Capture format: QuickTime Animation

Codec: None

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