高功率毫米波辐照鼠疼痛阈值及应激反应

 高功率8 mm波辐照时，大小鼠均产生热应激反应，依次经历平静期、警戒期、相持期和衰竭期。鼠的热痛阈值温度为(43.1±1.8) ℃，这一阈值与鼠的质量、初始温度、辐照功率密度等无关。 辐照3 s时：辐照功率密度为3.5 W/cm2时体表温升为(8.4±1.0) ℃；辐照功率密度为7.0 W/cm2时温升为(21.1±3.0) ℃。实验还测定了警戒期持续时间，结果表明动物应激反应的剧烈程度与警戒期持续时间相关。建立了小鼠警戒期持续时间与小鼠体表面积、有效辐照面积、辐照功率密度之间的关系，并将这一实验结果推广到大鼠。

Pain threshold and heat stress reaction of mice irradiated by high power millimeter wave

Heat stress reaction was induced by irradiation of high-power 8 millimeter wave on both mice and rats. Four periods of their stress reaction——quiet period, guarding period, deadlock period, prostrating period were observed. The pain threshold temperature of a mouse is (43.1±1.8) ℃, which is not related with its weight, initial temperature of the skin and irradiated power density. The temperature increase of the skin was (8.4±1.0) ℃ by the irradiation at the power density of 3.5 W/cm2 for 3 s and it was (21.1±3.0) ℃ at the power density of 7.0 W/cm2 for 3 s. The duration of guarding period was measured. The relations between the guarding duration and the surficial area of the mouse, the effective irradiating area and irradiating power intensity have been built. The experimental resu