레늄 동위 원소

자연계에 존재하는 레늄의 동위 원소는 ¹⁸⁵Re, ¹⁸⁷Re이 있다. 이 중 ¹⁸⁵Re은 안정 동위 원소이며, ¹⁸⁷Re은 방사성 동위 원소인데 ¹⁸⁷Re이 자연계에서 존재비가 62.6%로 방사성 동위 원소의 존재비가 더 많다.

¹⁸⁷Re은 오스뮴-레늄 연대 측정에 쓰인다.

표

핵자 수	Z(p)	N(n)	동위 원소 질량 (u)	반감기	붕괴 방식	붕괴 생성 동위 원소	핵 스핀	자연계에 존재하는 동위 원소 범위 (몰 분율)	자연계에 존재하는 최대 범위 (몰 분율)
	들뜬 에너지
160Re	75	85	159.98212(43)#	860(120) µs [0.82(+15-9) ms]	p (91%)	159W	(2-)
					α (9%)	156Ta
161Re	75	86	160.97759(22)	0.37(4) ms	p	160W	1/2+
161mRe	123.8(13) keV			15.6(9) ms	α	157Ta	11/2-
162Re	75	87	161.97600(22)#	107(13) ms	α (94%)	158Ta	(2-)
					β+ (6%)	162W
162mRe	173(10) keV			77(9) ms	α (91%)	158Ta	(9+)
					β+ (9%)	162W
163Re	75	88	162.972081(21)	390(70) ms	β+ (68%)	163W	(1/2+)
					α (32%)	159Ta
163mRe	115(4) keV			214(5) ms	α (66%)	159Ta	(11/2-)
					β+ (34%)	163W
164Re	75	89	163.97032(17)#	0.53(23) s	α (58%)	160Ta	high
					β+ (42%)	164W
164mRe	120(120)# keV			530(230) ms			(2#)-
165Re	75	90	164.967089(30)	1# s	β+	165W	1/2+#
					α	161Ta
165mRe	47(26) keV			2.1(3) s	β+ (87%)	165W	11/2-#
					α (13%)	161Ta
166Re	75	91	165.96581(9)#	2# s	β+	166W	2-#
					α	162Ta
167Re	75	92	166.96260(6)#	3.4(4) s	α	163Ta	9/2-#
					β+	167W
167mRe	130(40)# keV			5.9(3) s	β+ (99.3%)	167W	1/2+#
					α (0.7%)	163Ta
168Re	75	93	167.96157(3)	4.4(1) s	β+ (99.99%)	168W	(5+,6+,7+)
					α (0.005%)	164Ta
168mRe	non-exist			6.6(15) s
169Re	75	94	168.95879(3)	8.1(5) s	β+ (99.99%)	169W	9/2-#
					α (0.005%)	165Ta
169mRe	145(29) keV			15.1(15) s	β+ (99.8%)	169W	1/2+#
					α (0.2%)	164Ta
170Re	75	95	169.958220(28)	9.2(2) s	β+ (99.99%)	170W	(5+)
					α (0.01%)	166Ta
171Re	75	96	170.95572(3)	15.2(4) s	β+	171W	(9/2-)
172Re	75	97	171.95542(6)	15(3) s	β+	172W	(5)
172mRe	0(100)# keV			55(5) s	β+	172W	(2)
173Re	75	98	172.95324(3)	1.98(26) min	β+	173W	(5/2-)
174Re	75	99	173.95312(3)	2.40(4) min	β+	174W
175Re	75	100	174.95138(3)	5.89(5) min	β+	175W	(5/2-)
176Re	75	101	175.95162(3)	5.3(3) min	β+	176W	3+
177Re	75	102	176.95033(3)	14(1) min	β+	177W	5/2-
177mRe	84.71(10) keV			50(10) µs			5/2+
178Re	75	103	177.95099(3)	13.2(2) min	β+	178W	(3+)
179Re	75	104	178.949988(26)	19.5(1) min	β+	179W	(5/2)+
179m1Re	65.39(9) keV			95(25) µs			(5/2-)
179m2Re	1684.59(14)+Y keV			>0.4 µs			(23/2+)
180Re	75	105	179.950789(23)	2.44(6) min	β+	180W	(1)-
181Re	75	106	180.950068(14)	19.9(7) h	β+	181W	5/2+
182Re	75	107	181.95121(11)	64.0(5) h	β+	182W	7+
182m1Re	60(100) keV			12.7(2) h	β+	182W	2+
182m2Re	235.736(10)+X keV			585(21) ns			2-
182m3Re	461.3(1)+X keV			0.78(9) µs			(4-)
183Re	75	108	182.950820(9)	70.0(14) d	ε	183W	5/2+
183mRe	1907.6(3) keV			1.04(4) ms	IT	183Re	(25/2+)
184Re	75	109	183.952521(5)	38.0(5) d	β+	184W	3(-)
184mRe	188.01(4) keV			169(8) d	IT (75.4%)	184Re	8(+)
					β+ (24.6%)	184W
185Re	75	110	184.9529550(13)	안정			5/2+	0.3740(2)
185mRe	2124(2) keV			123(23) ns			(21/2)
186Re	75	111	185.9549861(13)	3.7186(5) d	β- (93.1%)	186Os	1-
					ε (6.9%)	186W
186mRe	149(7) keV			2.0(5)×105 a	IT (90%)	186Re	(8+)
					β- (10%)	186Os
187Re	75	112	186.9557531(15)	41.2(2)×109 a	β- (99.99%)	187Os	5/2+	0.6260(2)
					α (10−4%)	183Ta
188Re	75	113	187.9581144(15)	17.0040(22) h	β-	188Os	1-
188mRe	172.069(9) keV			18.59(4) min	IT	188Re	(6)-
189Re	75	114	188.959229(9)	24.3(4) h	β-	189Os	5/2+
190Re	75	115	189.96182(16)	3.1(3) min	β-	190Os	(2)-
190mRe	210(50) keV			3.2(2) h	β- (54.4%)	190Os	(6-)
					IT (45.6%)	190Re
191Re	75	116	190.963125(11)	9.8(5) min	β-	191Os	(3/2+,1/2+)
192Re	75	117	191.96596(21)#	16(1) s	β-	192Os
193Re	75	118	192.96747(21)#	30# s [>300 ns]			5/2+#
194Re	75	119	193.97042(32)#	2# s [>300 ns]