Hammond T J, Gallo C F
Appl Opt. 1974 Sep 1;13(9):2164-70. doi: 10.1364/AO.13.002164.
The intensity of the Hg 2573-A radiation from Hg + Ar discharges was measured as an independent function of mercury pressure (0.2-50 mTorr), ac current (50-2100 mA) and tube radius (0.79 cm and 1.27 cm) at a constant Ar pressure of ~4 Torr. For various constant mercury pressures, the Hg 2537-A intensity initially rises linearly with increasing current, but then tends to bend over and approach an asymptotic limit. The nonlinear, asymptotic behavior is due to electron deexcitation of the Hg 6(3)P(1) state at the higher currents in the presence of Hg 2537-A self-absorption. The Hg 2537-A intensity was also measured as a function of mercury pressure at various constant currents. The intensity rises to a peak (which defines an optimum Hg pressure) and then decreases with further increase in mercury pressure due to the combination of self-absorption and electron deexcitation. For high ac currents, the optimum Hg pressure is independent of current but varies inversely with the tube diameter. All this behavior is relevant to the problem of obtaining high efficiency from fluorescent lamps at high powers.
在氩气压力约为4托的恒定条件下,测量了汞与氩混合放电中汞2573埃辐射的强度,该强度是汞压力(0.2 - 50毫托)、交流电流(50 - 2100毫安)和灯管半径(0.79厘米和1.27厘米)的独立函数。对于各种恒定的汞压力,汞2537埃的强度最初随电流增加呈线性上升,但随后趋于弯曲并接近渐近极限。这种非线性的渐近行为是由于在存在汞2537埃自吸收的情况下,较高电流下汞6(3)P(1)态的电子去激发所致。汞2537埃的强度还作为各种恒定电流下汞压力的函数进行了测量。强度上升至峰值(该峰值定义了最佳汞压力),然后由于自吸收和电子去激发的共同作用,随着汞压力的进一步增加而降低。对于高交流电流,最佳汞压力与电流无关,但与灯管直径成反比。所有这些行为都与高功率荧光灯的高效问题相关。