The control of beam halo - chaos becomes a critical problem in the development of high intensity accelerator. efforts to remove the halo by collimation have been largely unsuccessful since the halos almost always regenerate. the mechanisms of halos are complex, such as nonlinear resonances and chaotic behavior etc. considering this, professor fang jin - qing who works in china institute of atomic energy pointed out that the theory of chaos control can be used to control beam halos. he presented the method to control halos by using nonlinear functions, which means nonlinear function g is added to the right of ion radial self - edlctric force equation and some nonlinear function are selected to control beam halos in simulations. in paper [ 69 ], controllerg = - 0. 15sin ( rmax - am ) 2 was used and the halo intensity was decreased to 0. 1078, the halos are removed partly
束
暈?混沌的控制是新一代強流加速器研製的關鍵問題,隨著強流離子束應用前景的日趨廣闊而日益成為研究的
熱點。傳統機械限束器因無法解決束
暈的再生而收效甚微,因為束
暈的形成有著其內在動力學機制?非線性共振以及混沌等。基於此,中國原子能科學院研究員方錦清將混沌控制的理論和方法開創性的運用於束
暈?混沌的控制上,提出了控制束
暈?混沌的非線性控制策略,即在粒子徑向所受束自生場力方程的右邊加上非線性控制函數g :並選取一些非線性函數如等進行了控制的模擬研究,將束
暈強度控制在0 . 1078左右,取得了初步的控制效果。
Symptoms of heat exhaustion include giddiness, headache, nausea, shortness of breath and mental confusion. when the body temperature reaches 41
熱衰竭的徵狀包括頭
暈頭痛惡心氣促及神志不清等。
Her face burned with a blush.
她的臉上
熱乎乎地泛起了紅
暈。
Apply warm compress to the breasts ( e. g. with a warm towel ) for a few minutes
熱敷乳房數分鐘(可用
熱毛巾,但避免敷及乳頭和乳
暈) 。
Numerical model for hel indoor transmission
高能激光室內傳輸
熱暈效應的數值分析
The theoretical and experimental results show that image quality can be improved by compensating thermal blooming in ir image
理論和實驗結果表明,對紅外圖像的
熱暈補償改善了圖像的質量。
Thermal blooming can be observed in ir images when ir detector operates for a long time or ir detector is directly illuminated by sun
摘要紅外探測器工作時間長或太陽直射時,可觀察到紅外圖像有
熱暈現象。
The influence of thermal blooming on ir image quality is relative severe when brightness or contrast of the ir detector observed scenery is very low
紅外探測器觀察的景物亮度或對比度通常很低,此時
熱暈對紅外像質的影響比較嚴重。
In accordance with the above case, real - time background compensation against ir image for eliminating influence of thermal blooming can be carried out by using digital image processing methods such as frame subtraction and reversed color addition
針對上述情況,研究用數字圖像處理的方法幀相減、反色相加,對紅外圖像進行實時背景補償,以便消除
熱暈的影響。
The thesis also discusses the thermal blooming and physical of the heat halo produced by intense laser. the thesis emphasizes on otf and psf of atmospheric turbulence. taking three screen systems as the example, we get the ideal approximation model, especially the short - exposure otf
並介紹了強激光產生
熱暈的理論模型及其物理特性機理,重點介紹湍流大氣的otf和psf ,以三種屏系統為例,得到湍流大氣的理想近似模型,特別是短曝光otf 。
Symptoms of heat exhaustion include giddiness, headache ; nausea, shortness of breath and mental confusion. when the body temperature reaches 41
熱衰竭的徵狀包括頭
暈、頭痛、惡心、氣促及神志不清等。
The victim feels hot, dizzy, uneasy and even becomes unconscious
患者感感到熱、暈眩、不安寧、甚至不醒人事。