홀뮴 동위 원소

홀뮴 동위 원소는 자연계에 존재하는 것과 인공적으로 만들어진 것이 있다.

자연계에 존재하는 홀뮴의 안정 동위 원소는 1종으로 ¹⁶⁵Ho이 100% 존재한다.

인공적으로 만들어진 홀뮴의 동위 원소는 ¹⁴⁰Ho부터 ¹⁷⁵Ho까지 합성되었는데, 이들 중 ¹⁶³Ho의 반감기가 4570년으로 가장 길다. ^166m1Ho은 들떠 있지만 반감기는 1200년이나 된다.

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
140Ho	67	73	139.96854(54)#	6(3) ms			8+#
141Ho	67	74	140.96310(54)#	4.1(3) ms			(7/2-)
141mHo	66(2) keV			6.4(8) µs			(1/2+)
142Ho	67	75	141.95977(54)#	400(100) ms	β+	142Dy	(6~9)
					p	141Dy
143Ho	67	76	142.95461(43)#	300# ms [>200 ns]	β+	143Dy	11/2-#
144Ho	67	77	143.95148(32)#	0.7(1) s	β+	144Dy
					β+, p	143Tb
145Ho	67	78	144.94720(32)#	2.4(1) s	β+	145Dy	(11/2-)
145mHo	100(100)# keV			100# ms			5/2+#
146Ho	67	79	145.94464(21)#	3.6(3) s	β+	146Dy	(10+)
					β+, p (드묾)	145Tb
147Ho	67	80	146.94006(3)	5.8(4) s	β+	147Dy	(11/2-)
					β+, p (드묾)	146Tb
148Ho	67	81	147.93772(14)	2.2(11) s	β+	148Dy	(1+)
148m1Ho	400(100)# keV			9.49(12) s	β+ (99.92%)	148Dy	(6)-
					β+, p (0.08%)	147Tb
148m2Ho	690(100)# keV			2.35(4) ms			(10+)
149Ho	67	82	148.933775(20)	21.1(2) s	β+	149Dy	(11/2-)
149m1Ho	48.80(20) keV			56(3) s	β+	149Dy	(1/2+)
149m2Ho	7200(350) keV			>=100 ns
150Ho	67	83	149.933496(15)	76.8(18) s	β+	150Dy	2-
150m1Ho	-10(50) keV			23.3(3) s	β+	150Dy	(9)+
150m2Ho	~8000 keV			751 ns
151Ho	67	84	150.931688(13)	35.2(1) s	β+ (78%)	151Dy	11/2(-)
					α (22%)	147Tb
151mHo	41.0(2) keV			47.2(10) s	α (77%)	147Tb	1/2(+)
					β+ (22%)	151Dy
152Ho	67	85	151.931714(15)	161.8(3) s	β+ (88%)	152Dy	2-
					α (12%)	148Tb
152m1Ho	160(1) keV			50.0(4) s			9+
152m2Ho	3019.59(19) keV			8.4(3) µs			19-
153Ho	67	86	152.930199(6)	2.01(3) min	β+ (99.94%)	153Dy	11/2-
					α (0.05%)	149Tb
153m1Ho	68.7(3) keV			9.3(5) min	β+ (99.82%)	153Dy	1/2+
					α (0.18%)	149Tb
153m2Ho	2772 keV			229(2) ns			(31/2+)
154Ho	67	87	153.930602(9)	11.76(19) min	β+ (99.98%)	154Dy	2-
					α (0.02%)	150Tb
154mHo	238(30) keV			3.10(14) min	β+ (99.99%)	154Dy	8+
					α (0.001%)	150Tb
					IT (드묾)	154Ho
155Ho	67	88	154.929103(19)	48(1) min	β+	155Dy	5/2+
155mHo	141.97(11) keV			880(80) µs			11/2-
156Ho	67	89	155.92984(5)	56(1) min	β+	156Dy	4-
156m1Ho	100(50)# keV			7.8(3) min	β+	156Dy	(9+)
					IT	156Ho
156m2Ho	52.4(5) keV			9.5(15) s			1-
157Ho	67	90	156.928256(26)	12.6(2) min	β+	157Dy	7/2-
158Ho	67	91	157.928941(29)	11.3(4) min	β+ (93%)	158Dy	5+
					α (7%)	154Tb
158m1Ho	67.200(10) keV			28(2) min	IT (81%)	158Ho	2-
					β+ (19%)	158Dy
158m2Ho	180(70)# keV			21.3(23) min			(9+)
159Ho	67	92	158.927712(4)	33.05(11) min	β+	159Dy	7/2-
159mHo	205.91(5) keV			8.30(8) s	IT	159Ho	1/2+
160Ho	67	93	159.928729(16)	25.6(3) min	β+	160Dy	5+
160m1Ho	59.98(3) keV			5.02(5) h	IT (65%)	160Ho	2-
					β+ (35%)	160Dy
160m2Ho	197(16) keV			3 s			(9+)
161Ho	67	94	160.927855(3)	2.48(5) h	ε	161Dy	7/2-
161mHo	211.16(3) keV			6.76(7) s	IT	161Ho	1/2+
162Ho	67	95	161.929096(4)	15.0(10) min	β+	162Dy	1+
162mHo	106(7) keV			67.0(7) min	IT (62%)	162Ho	6-
					β+ (38%)	162Dy
163Ho	67	96	162.9287339(27)	4570(25) a	ε	163Dy	7/2-
163mHo	297.88(7) keV			1.09(3) s	IT	163Ho	1/2+
164Ho	67	97	163.9302335(30)	29(1) min	ε (60%)	164Dy	1+
					β- (40%)	164Er
164mHo	139.77(8) keV			38.0(10) min [37.5(+15-5) min]	IT	164Ho	6-
165Ho	67	98	164.9303221(27)	안정			7/2-	1.0000
166Ho	67	99	165.9322842(27)	26.83(2) h	β-	166Er	0-
166m1Ho	5.985(18) keV			1,200(180) a	β-	166Er	(7)-
166m2Ho	190.9052(20) keV			185(15) µs			3+
167Ho	67	100	166.933133(6)	3.003(18) h	β-	167Er	7/2-
167mHo	259.34(11) keV			6.0(10) µs			3/2+
168Ho	67	101	167.93552(3)	2.99(7) min	β-	168Er	3+
168m1Ho	59(1) keV			132(4) s	IT (99.5%)	168Ho	(6+)
					β- (0.5%)	168Er
168m2Ho	143.4(2) keV			>4 µs			(1)-
168m3Ho	192.6(2) keV			108(11) ns			1+
169Ho	67	102	168.936872(22)	4.72(10) min	β-	169Er	7/2-
170Ho	67	103	169.93962(5)	2.76(5) min	β-	170Er	6+#
170mHo	120(70) keV			43(2) s	β-	170Er	(1+)
171Ho	67	104	170.94147(64)	53(2) s	β-	171Er	7/2-#
172Ho	67	105	171.94482(43)#	25(3) s	β-	172Er
173Ho	67	106	172.94729(43)#	10# s	β-	173Er	7/2-#
174Ho	67	107	173.95115(54)#	8# s
175Ho	67	108	174.95405(64)#	5# s			7/2-#