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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(07) [July 2006] >
| Title: | Temperature effect on lyoluminescence of potassium halide microcrystals in luminol solution |
| Authors: | Chandok, R S
Kaur, R
Chandok, G K
Chandra, B P |
| Keywords: | Activation energy
Luminol (3 amino-phthalahydrazide)
Lyoluminescence |
| Issue Date: | Jul-2006 |
| Publisher: | CSIR |
| IPC Code: | F21K2/00, G06N7/00 |
| Abstract: |
When
 -irradiated
microcrystals of potassium halides are dissolved in the luminol solution, the
lyoluminescence (LL) intensity initially increases linearly with time, attains
an optimum value and then decreases and finally disappears. The LL intensity
was detected by PMT whose output was connected to X-Y recorder. Temperature
dependence of LL intensity shows that initially the peak of LL
intensity (Im) increases
with temperature, attains a peak value, and then decreases with further
increase in temperature. Also, the total intensity IT initially increases, attains an optimum value and
then it decreases with further increase in temperature. The decay time
decreases with increasing temperature of the solvent, from where the value of
activation energy Ea can
be calculated. A plausible explanation for the experimental results is given.
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| Page(s): | 519-523 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(07) [July 2006]
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