脈沖閾能 的英文怎麼說
中文拼音 [màichōngyùnéng]
脈沖閾能
英文
pulse threshold energy-
Experimental study on that 532nm 、 1064nm 、 1319nm 5khz frequency pw laser irradiate the ccd respectively. with the data of experiment, the thresholds of laser power density that induce ccd saturation, crosstalk and irreparability damage were calculated. the phenomenon that 532nm 5khz laser can induce part of ccd functional damage but absolutely damage was found
根據實驗數據計算了532nm 、 1064nm高重頻脈沖激光使ccd出現飽和、串擾以及被破壞的功率密度閾值;實驗發現一定功率密度的高重頻532nm脈沖激光可以使ccd局部損傷而不致整體破壞;實驗進一步證實了1319nm激光不能使可見光ccd產生響應。In the calculation, the energy deposited in aluminum by proton beams is first calculated by m - c simulation, then a 1 - d elastic - plastic fluid model is used to simulate the following thermal shock wave process as a result of thermal - mechanical effect by proton irradiation. the shape of proton is taken as a rectangle pulse with a width of 0. 1 microseconds, the energy flux o
對於3mm的鋁材料，入射粒子束為矩形脈沖（脈寬為0 . 1 s ）的情況下，計算得到了電子束、質子束輻照引起鋁材料斷裂的能注量閾值與入射電子束、質子束能量的關系曲線，該曲線存在最小值，分別對應6mev的質子束的34 . 7j cm ~ 2和0 . 35mev電子束的42 . 1j cm ~ 2 。By comparing to that of bbo, we can see that the threshold of clbo is lower than that of bbo. thus clbo provided another excellent crystal in dro if the pump power is low
從結果可以看出，在平面波雙諧振下， clbo晶體的振蕩閾值低於同等條件下的bbo晶體，從而為連續波、長脈沖等能量較小的泵浦源提供了更加優良的可選晶體。The aim of this study is to investigate theoretically the possibility for activation of small mammalian myelinated nerve fibers without activating larger ones when stimulating a nerve fiber bundle with a monopolar point electrode using biphasic pulses, which can reduce the electrochemical damage resulted from stimulation pulses to nerve fibers. a simulation system for studying the electrical properties of mammalian myelinated nerve fibers was built based on a simple infinite and homogeneous volume conductor model. by use of an asymmetric but charge - balanced stimulation waveform, the sensitivity of excitation and blocking threshold of nerve fibers to fiber diameter, electrode - fiber distance was calculated. the results show that selective activation of small mammalian myelinated fibers may be possible in a region at some distance from the electrode using biphasic pulses
本研究的目的是要從理論上探討利用單電極雙向脈沖刺激實現哺乳動物神經纖維選擇性刺激， （即當刺激一束神經時，不興奮粗神經而興奮細神經）的可能性.雙向脈沖刺激可以降低刺激脈沖對神經纖維產生的電化學損傷.為研究哺乳動物有髓神經纖維的電特性，建立了一個基於簡單的無窮大、各向同性的容積導體模型的模擬系統.利用該模擬系統，採用「不對稱但電荷平衡」的雙向脈沖刺激，計算了神經纖維的興奮和阻斷閾值與纖維直徑、纖維-電極間距離的關系.結果表明：在距電極一定距離內採用該雙向脈沖刺激模式確實可以實現哺乳動物有髓神經纖維的選擇性興奮Especially the gaas pcss can take on particular phenomena of nonlinear characteristics ( also known as lock - on effect or high - gain mode ) witch made it be very availability., convenience and f lexibleness
特別是在一定的觸發光能和偏置電場閾值下，光電導開關存在的非線性工作模式（或lock - on效應） ，使得pcss ' s在高壓超快功率脈沖系統中的應用更為有效、方便、靈活。分享友人