this is not easy though...... Z :nbZHByh Jp~zX
lu I guess you need to give a try as sigma indicates the projected width of 1/e squared value of the peak irrdiance in direction cosine space...... for a normally incidence it should be around ~ cosine 85. Good luck !
Hi MANG2004, u8L$]vOg `/IKdO*!S I am curious about your calculation, too. Plus, the definition of σ refers to 1/e^2 width not the FWHM. Even your calculation/defintion is correct. I have a doubt that it will work when the specualr incident ray angle is not normal......... n/Dp"4H%q tWPO]3hW For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, SNpi=K!yn ip:LcG t Thanks for your reply. Really like those words “guess”, “doubt”… ~mp0B9L% 3Ofc\ For your curiosity, have good luck! !CY&{LEYn0 F"jt&9jg MANG2004 KY9n2u&4