Process by which the resonance radiation emitted in a lamp is absorbed and re-emitted many times in the plasma prior to striking the phosphor. This process is called radiation trapping or imprisonment.
Note:
Radiation @T06492@ lengthens the effective @L03515@ of emission as viewed from outside the @L03447@. The control of this @T06492@ is, therefore, an important design consideration for low-pressure lamps.
Source:
PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 410 (https://doi.org/10.1351/pac200779030293)