ハフニウムの同位体

ハフニウム(Hf)の標準原子量は178.49(2) uである。

一覧

同位体核種	Z(p)	N(n)	同位体質量 (u)	半減期	核スピン数	天然存在比	天然存在比 (範囲)
	励起エネルギー
153Hf	72	81	152.97069(54)#	400# ms [>200 ns]	1/2+#
153mHf	750(100)# keV			500# ms	11/2-#
154Hf	72	82	153.96486(54)#	2(1) s	0+
155Hf	72	83	154.96339(43)#	890(120) ms	7/2-#
156Hf	72	84	155.95936(22)	23(1) ms	0+
156mHf	1959.0(10) keV			480(40) µs	8+
157Hf	72	85	156.95840(21)#	115(1) ms	7/2-
158Hf	72	86	157.954799(19)	2.84(7) s	0+
159Hf	72	87	158.953995(18)	5.20(10) s	7/2-#
160Hf	72	88	159.950684(12)	13.6(2) s	0+
161Hf	72	89	160.950275(24)	18.2(5) s	3/2-#
162Hf	72	90	161.94721(1)	39.4(9) s	0+
163Hf	72	91	162.94709(3)	40.0(6) s	3/2-#
164Hf	72	92	163.944367(22)	111(8) s	0+
165Hf	72	93	164.94457(3)	76(4) s	(5/2-)
166Hf	72	94	165.94218(3)	6.77(30) min	0+
167Hf	72	95	166.94260(3)	2.05(5) min	(5/2)-
168Hf	72	96	167.94057(3)	25.95(20) min	0+
169Hf	72	97	168.94126(3)	3.24(4) min	(5/2)-
170Hf	72	98	169.93961(3)	16.01(13) h	0+
171Hf	72	99	170.94049(3)	12.1(4) h	7/2(+)
171mHf	21.93(9) keV			29.5(9) s	1/2(-)
172Hf	72	100	171.939448(26)	1.87(3) a	0+
172mHf	2005.58(11) keV			163(3) ns	(8-)
173Hf	72	101	172.94051(3)	23.6(1) h	1/2-
174Hf	72	102	173.940046(3)	2.0(4)E+15 a	0+	0.0016(1)	0.001619-0.001621
174m1Hf	1549.3 keV			138(4) ns	(6+)
174m2Hf	1797.5(20) keV			2.39(4) µs	(8-)
174m3Hf	1797.5 keV			2.39(4) µs	(8-)
174m4Hf	3311.7 keV			3.7(2) µs	(14+)
175Hf	72	103	174.941509(3)	70(2) d	5/2-
176Hf	72	104	175.9414086(24)	STABLE	0+	0.0526(7)	0.05206-0.05271
177Hf	72	105	176.9432207(23)	STABLE	7/2-	0.1860(9)	0.18593-0.18606
177m1Hf	1315.4504(8) keV			1.09(5) s	23/2+
177m2Hf	1342.38(20) keV			55.9(12) µs	(19/2-)
177m3Hf	2740.02(15) keV			51.4(5) min	37/2-
178Hf	72	106	177.9436988(23)	STABLE	0+	0.2728(7)	0.27278-0.27297
178m1Hf	1147.423(5) keV			4.0(2) s	8-
178m2Hf	2573.5(5) keV			68(2) µs	(14-)
178m3Hf	2445.69(11) keV			31(1) a	16+
179Hf	72	107	178.9458161(23)	STABLE	9/2+	0.1362(2)	0.13619-0.1363
179m1Hf	375.0367(25) keV			18.67(4) s	1/2-
179m2Hf	1105.84(19) keV			25.05(25) d	25/2-
180Hf	72	108	179.9465500(23)	STABLE	0+	0.3508(16)	0.35076-0.351
180m1Hf	1141.48(4) keV			5.47(4) h	8-
180m2Hf	1374.15(4) keV			0.57(2) µs	(4-)
180m3Hf	2425.8(10) keV			15(5) µs	(10+)
180m4Hf	2486.3(9) keV			10(1) µs	12+
180m5Hf	2538.3(12) keV			>10 µs	(14+)
180m6Hf	3599.3(18) keV			90(10) µs	(18-)
181Hf	72	109	180.9491012(23)	42.39(6) d	1/2-
181m1Hf	595(3) keV			80(5) µs	(9/2+)
181m2Hf	1040(10) keV			~100 µs	(17/2+)
181m3Hf	1738(10) keV			1.5(5) ms	(27/2-)
182Hf	72	110	181.950554(7)	8.90(9)E+6 a	0+
182mHf	1172.88(18) keV			61.5(15) min	8-
183Hf	72	111	182.95353(3)	1.067(17) h	(3/2-)
184Hf	72	112	183.95545(4)	4.12(5) h	0+
184mHf	1272.4(4) keV			48(10) s	8-
185Hf	72	113	184.95882(21)#	3.5(6) min	3/2-#
186Hf	72	114	185.96089(32)#	2.6(12) min	0+
187Hf	72	115	186.96459(43)#	30# s [>300 ns]
188Hf	72	116	187.96685(54)#	20# s [>300 ns]	0+

参考文献

• Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
• Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
• Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
  • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
  • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
  • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.