this is not easy though...... c]i;0j? Dl ))nTd= 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, WJ LqH< {+[Ex2b$ 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......... VvT7v] Y\+LBbB8 For thsoe who knows it better, please have some input. I am rather curious, too!! Thanks!!
Hi, hopebox, Jr= fc*f B6KG\,'| Thanks for your reply. Really like those words “guess”, “doubt”… B(5>H2 .:GOKyr(~ For your curiosity, have good luck! n)z:C{ ZLdIEBi= MANG2004 YU!s;h