G21G   1/00  \	0	0	2G081	G21G   1/00	36	電磁放射線，微粒子線または粒子衝撃による化学元素変換装置，例．放射性同位元素の生成（熱核反応によるものＧ２１Ｂ；核燃料の変換Ｇ２１Ｃ）［２］	Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation, or particle bombardment, e.g. producing radioactive isotopes (by thermonuclear reactions in nuclear reactors G21B; conversion of nuclear fuel in nuclear reactors G21C) [2]
G21G   1/02  \	1	1	2G081	G21G   1/02	109	原子炉内におけるもの	in nuclear reactors
G21G   1/04  \	1	1	2G081	G21G   1/04	38	原子炉以外のものまたは粒子加速器［２］	outside of nuclear reactors or particle accelerators [2]
G21G   1/06  \	2	2	2G081	G21G   1/06	115	中性子照射によるもの［２］	by neutron irradiation [2]
G21G   1/08  \	3	3	2G081	G21G   1/08	24	核分裂を伴うもの［２］	accompanied by nuclear fission [2]
G21G   1/10  \	2	2	2G081	G21G   1/10	317	荷電粒子の衝撃によるもの（照射装置Ｇ２１Ｋ５／００）［２］	by bombardment with electrically-charged particles (irradiation devices G21K 5/00) [2]
G21G   1/12  \	2	2	2G081	G21G   1/12	75	電磁照射によるもの，例．ガンマ線またはＸ線に関するもの（照射装置Ｇ２１Ｋ５／００）［２］	by electromagnetic irradiation, e.g. with gamma or X-rays (irradiation devices G21K 5/00) [2]
G21G   4/00  \	0	0	2G081	G21G   4/00	89	放射線源［２］	Radioactive sources [2]
G21G   4/02  \	1	1	2G081	G21G   4/02	125	中性子源［２］	Neutron sources [2]
G21G   4/04  \	1	1	2G081	G21G   4/04	142	中性子源以外の放射線源（放射性被覆Ａ６１Ｍ３６／１４）［２］	Radioactive sources other than neutron sources (radioactive dressings A61M 36/14) [2]
G21G   4/06  \	2	2	2G081	G21G   4/06	55	構造的形態に特徴のあるもの［２］	characterised by constructional features [2]
G21G   4/08  \	3	3	2G081	G21G   4/08	104	医学的応用に特に適したもの（放射線源を用いた放射線治療Ａ６１Ｎ５／１０）［２］	specially adapted for medical applications (radiation therapy using radioactive sources A61N 5/10) [2]
G21G   4/08  G	3	0	2G081	G21G   4/08	176	ジェネレータ	Generators
G21G   4/08  T	3	1	2G081	G21G   4/08	240	テクネチウム〔Ｔｃ９９ｍ〕に関するもの	related to technetium (Tc99m)
G21G   4/08  Z	3	0	2G081	G21G   4/08	147	その他のもの	Others
G21G   4/10  \	2	2	2G081	G21G   4/10	35	ラジウムエマナチオンをもつもの［２］	with radium emanation [2]
G21G   5/00  \	0	0	2G081	G21G   5/00	16	化学反応による化学元素の変換と称せられるもの	Alleged conversion of chemical elements by chemical reaction
G21G   7/00  \	0	0	2G081	G21G   7/00	54	このサブクラスの他のグループに分類されない化学元素の変換　［２００９．０１］	Conversion of chemical elements not provided for in other groups of this subclass [2009.01]
