Letter | Published:

A Characteristic Example of Re-trapping in Phosphorescence

Naturevolume 166page70 (1950) | Download Citation



THERE has been much discussion about the existence of re-trapping (electronic recapture) in phosphorescence1. One of my experiments seems to demonstrate the existence of re-trapping: electrons leave the deep traps and get into the short-life traps. I used a calcium sulphide, (bismuth activator) phosphor of very long afterglow. This sulphide was strongly excited by ultra-violet radiations of about 0.36 µ from a mercury vapour arc; it was then heated up to 135° C. until complete extinction was reached. When the sulphide had cooled down to room temperature, it was submitted to the infra-red radiations of a 300-W. electric lamp filtered by a black manganese–iron glass with transparent range of 0.8 µ–4µ with some peaks between 1 µ and 4 µ.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Garlick, G. F. J., Cornell Symposium of the American Physical Society, 87 (1948); Proc. Phys. Soc. (June 1, 1948). Urbach, F., loc. cit., 295. Ellickson, R. T., and Parker, W. T., loc. cit., 331. Williams and Eyring, J. Chem. Phys., 15, 289 (1947), Curie, D., C.R. Acad. Sci., Paris, 229, 193 (1949); 229, 1321 (1949).

  2. 2

    Lenard, P., “Handbk. für exper. Phys.”, 1, 125 (1928).

  3. 3

    Garlick, G. F. J., and Mason, D. E., J. Electrochem. Soc. U.S.A., 96, 90 (1949).

Download references

Author information


  1. Faculté des Sciences, 12 rue Cuvier, Paris

    • D. CURIE JUN.


  1. Search for D. CURIE JUN. in:

About this article

Publication history

Issue Date




By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.