autoluminescence

autoluminescence

[¦ȯd·ō‚lü·mə′nes·əns]
(atomic physics)
Luminescence of a material (such as a radioactive substance) resulting from energy originating within the material itself.
References in periodicals archive ?
It should be noted that furimazine (and other coelenterazine analogues) gives background signal because of light emission from enzyme-independent oxidation (autoluminescence).