Chain carrier

...A reaction that includes several successive reaction steps, such as this example, in which the product of one reaction step re-enters the next reaction step, and the overall reaction progresses through repeated production and disappearance, is called a chain reaction. The reaction intermediates (H. and Cl. above) that are repeatedly produced and disappeared in a chain reaction and connect the successive reaction steps are called chain carriers, and the condition for a chain reaction to occur is that these intermediates are sufficiently reactive to be able to continue the next reaction. A chain reaction consists of initiation, growth, and termination, and the number that indicates the average number of times the chain is repeated from when it is initiated to when it is terminated is called the length of the chain. ...

*Some of the terminology that mentions "chain carrier" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…この例のように，いくつかの引き続いて起こる反応段階を含み，ある反応段階の生成物が次の反応段階で再び反応に入り，生成･消滅を繰り返しながら，全体の反応が進行するような反応を連鎖反応という。連鎖反応で繰り返し生成･消滅し，引き続く反応段階を連結する反応中間体(上記のH･，Cl･)を連鎖担体chain carrierと呼び，この中間体が十分反応性に富み，次の反応を引き続き起こさせうることが，連鎖反応が起こる条件となる。連鎖反応は，開始，成長，停止からなり，連鎖が開始されてから停止するまで，連鎖が平均して何回繰り返されるかを示す数を連鎖の長さという。…

※「chain carrier」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報