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高中物理选修3-5导学案第十九?6 - 百度文库

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6 ѱ

[ѧĿҪ]

1.֪ʲôѱ.2.֪ʽӦʽӦ

ѧ˼ά1.ѱĺ.2.˽˷ӦĹԭ֪οƺ˷Ӧٶȣ

ѧ̬Σ˽ηֹȾ

һѱ

غ˱ӺѳԭӺˣųܵḶ́ 2˺ѱ

235U Ӻ˺ʱ˺˷ѱ䣬Ƕֶģһֵ͵ķӦ 921n144Ba89Kr31n. 0 56360

3ʽӦ

һһغѱѱͷŵغѱ䣬ܲϼȥַӦкѱʽӦ 4ʽӦ

(1)˿ڻٽ˿ڻٽ (2)㹻ӣ ˵վ

1˵վúܷ磬ĺʩǷӦѣҪ¼ɣ (1)ȼϣ˰

(2)ʯīˮͨˮ(Ҳˮ)

(3)ưΪ˿ƷӦٶȣҪ˰֮һЩӰӵǿӦڼʱӰһЩһЩӣʽӦٶȾͻһЩӰư 2ԭ

ȼѱͷŵʹӦ¶ߣˮҺ̬ĽƵڷӦѭѷӦڵȥڷ磮 3ȾĴ

ڷӦѵҪ޽ܺˮ㣬ѱųĸߣ˷ϾкǿķԣҪװƵ£

1ж˵

(1)˺˵ѱһȻ( )

(2)˿ڻٽʱʽӦܲͣؽȥ( ) (3)ӵٶԽ죬Խ׷˺ѱ䣮( ) (4)˺ѱIJDZ봣ҹ̶䣮( ) (5)˷ӦͨĿԿƷӦٶȣ( ) (6)˷Ӧùĺ˷޶޺( )

23511369012˺ѱ䷴Ӧеһ 92U0n 54Xe38Sr100n.֪235Ϊ235.043

9 uΪ1.008 7 u136Ϊ135.907 2 u90Ϊ89.907 7 u˺˷ӦͷŵǶ٣(1 u൱931.5 MeV) 140.4 MeV

ͷŵΪE(235.043 91.008 7135.907 289.907 7101.008 7) 931.5 MeV140.4 MeV.

ͼΪ˺ѱʾͼһѱ估ʽӦ

(1)˺ѱηģдһ˺ѱĺ˷Ӧ̣ (2)ֻҪӺ˿ͿԲʽӦ

(1)ӽ235󣬱γ˴ڼ״̬ĸˣںӵļ˶ʹ˱ɲ״ӼľѸټʹԭӺӼijöѳɼ飬ͬʱųӣЩ˺ѱ䣬ѱ䷴ӦһһȥγʽӦ

2351144891 92U0n 56Ba36Kr30n

(2)ֻ˿ڻٽܷʽӦ

1ѱ䷽

235U1n139Xe95Sr21n (1) 920 54380235U1n144Ba89Kr31n (2) 920 56360

2ʽӦ

(1)˿ڻٽ (2)㹻Ũȵ235. (3)㹻ӣ

3˵ͬλ235238׷ʽӦ

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