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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Thermoluminescence from spinach leaf without excitation by any radiation or external stimuli: Stimulatory role of thermal fluctuations
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Thermoluminescence from spinach leaf without excitation by any radiation or external stimuli: Stimulatory role of thermal fluctuations

机译：菠菜叶的热致发光，不受任何辐射或外部刺激的激发：热涨落的刺激作用

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This article argues that the sources of glow seen by the thermoluminescence (TL) technique may be from largely in vivo biological nanoparticles with property of quantum confinement that entails trapping of energy and delayed emission, not solely due to the charges that undergo recombination. TL in spinach leaf, following prolonged period of idling in dark at ambient temperatures but without any excitation, has been observed. Occasional loss of stringent control of heating rate revealed that fluctuations generated complex TL structures. Following the trails of this observation we discovered that ripples larger than +/- 1degreesC gave rise to multiple small bands and spikes which were missing when the rate was controlled within +/- 1degreesC, both with or without excitation by light. The results do not warrant the application of Randall and Wilkins' theory to interpret TL from photosynthetic materials.
机译：本文认为，通过热致发光（TL）技术观察到的辉光来源可能主要来自体内具有量子限制性质的生物纳米粒子，该性质具有捕获能量和延迟发射的作用，而不仅是由于经历重组的电荷。已经观察到菠菜叶中的TL，在环境温度下在黑暗中长时间闲置后没有任何激发。偶尔失去严格控制加热速率的结果表明，波动会产生复杂的TL结构。遵循这一观察的踪迹，我们发现大于+/- 1°C的波纹会引起多个小条带和尖峰，当将速率控制在+/- 1°C之内时，无论有无光激发，都将消失。结果不保证应用Randall和Wilkins的理论从光合材料解释TL。

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