ÌâÄ¿ÄÚÈÝ
£¨1£©ÓйØÈÈ·øÉäºÍ¹âµÄ±¾ÐÔ£¬ÇëÍê³ÉÏÂÁÐÌî¿ÕÌâ
ºÚÌå·øÉäµÄ¹æÂɲ»ÄÜÓþµäµç´ÅѧÀíÂÛÀ´½âÊÍ£¬1900ÄêµÂ¹úÎïÀíѧ¼ÒÆÕÀÊ¿ËÈÏΪÄÜÁ¿ÊÇÓÉÒ»·ÝÒ»·Ý²»¿É·Ö¸î×îСÄÜÁ¿Öµ×é³É£¬Ã¿Ò»·Ý³ÆΪ_________.1905Äê°®Òò˹̹´Ó´ËµÃµ½Æô·¢£¬Ìá³öÁ˹â×ӵĹ۵㣬ÈÏΪ¹â×ÓÊÇ×é³É¹âµÄ×îСÄÜÁ¿µ¥Î»£¬¹â×ÓµÄÄÜÁ¿±í´ïʽΪ_________£¬²¢³É¹¦½âÊÍÁË__________________ÏÖÏóÖÐÓйؼ«ÏÞƵÂÊ¡¢×î´ó³õ¶¯ÄܵȹæÂÉ£¬Ð´³öÁËÖøÃûµÄ______________·½³Ì£¬²¢Òò´Ë»ñµÃŵ±´¶ûÎïÀíѧ½±¡£
£¨2£©ÒÑ֪뮺ËÖÊÁ¿2.0136u£¬ÖÐ×ÓÖÊÁ¿Îª1.0087u£¬ºËÖÊÁ¿Îª3.0150u¡£
A¡¢Ð´³öÁ½¸ö뮺˾۱ä³ÉµÄºË·´Ó¦·½³Ì___________________________________¡£
B¡¢¼ÆËãÉÏÊöºË·´Ó¦ÖÐÊͷŵĺËÄÜ¡££¨½á¹û±£Áô2λÓÐЧÊý×Ö£©£¨1u=931.5Mev£©
C¡¢ÈôÁ½ë®ÒÔÏàµÈµÄ¶¯ÄÜ0.35MeV×÷¶ÔÐÄÅöײ¼´¿É·¢ÉúÉÏÊöºË·´Ó¦£¬ÇÒÊͷŵĺËÄÜÈ«²¿×ª»¯Îª»úеÄÜ£¬Ôò·´Ó¦ÖÐÉú³ÉµÄºËºÍÖÐ×ӵĶ¯Äܸ÷ÊǶàÉÙ£¿£¨½á¹û±£Áô2λÓÐЧÊý×Ö£©
£¨1£©ÄÜÁ¿×Ó ¹âµçЧӦ ¹âµçЧӦ·½³Ì£¨»ò£©
£¨2£©a¡¢£»b¡¢3.26Mev£»c¡¢0.815Mev
½âÎö:
£¨1£©ÄÜÁ¿×Ó ¹âµçЧӦ ¹âµçЧӦ·½³Ì£¨»ò£©
(2)a¡¢
b¡¢Ôں˷´Ó¦ÖÐÖÊÁ¿µÄ¿÷ËðΪ¦¤m=2¡Á2.0136u-1.0087u-3.015u
= 0.0035u
ËùÒÔÊͷŵĺËÄÜΪ0.0035¡Á931.5Mev=3.26Mev
c¡¢·´Ó¦Ç°×ܶ¯Á¿Îª0£¬·´Ó¦ºó×ܶ¯Á¿ÈÔΪ0£¬
ËùÒÔº¤ºËÓëÖÐ×ӵĶ¯Á¿ÏàµÈ¡£
ÓÉEK=P2/2mµÃ
EHe:En=1:3
ËùÒÔEn=3E/4=2.457Mev EHe=E/4=0.815Mev