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.