鎘的同位素

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原子量:112.411(8))共有50個同位素,其中有3個同位素是穩定的。

圖表[编辑]

符號 Z(p N(n 同位素質量(u 半衰期[n 1] 衰變
方式
[1][n 2]
衰變
產物
[n 3]
原子核
自旋
相對豐度
莫耳分率)
相對豐度
的變化量
莫耳分率)
激發能量
95Cd[2][3] 48 47 94.94987(64)# 5# ms 9/2+#
96Cd[2][3] 48 48 95.93977(54)# 1# s β+ 96Ag 0+
97Cd[2][3][4] 48 49 96.93494(43)# 2.8(6) s β+ (>99.9%) 97Ag 9/2+#
β+, p (<.1%) 96Pd
98Cd 48 50 97.92740(8) 9.2(3) s β+ (99.975%) 98Ag 0+
β+, p (.025%) 97Ag
98mCd 2427.5(6) keV 190(20) ns 8+#
99Cd 48 51 98.92501(22)# 16(3) s β+ (99.78%) 99Ag (5/2+)
β+, p (.21%) 98Pd
β+, α (10−4%) 94Rh
100Cd 48 52 99.92029(10) 49.1(5) s β+ 100Ag 0+
101Cd 48 53 100.91868(16) 1.36(5) min β+ 101Ag (5/2+)
102Cd 48 54 101.91446(3) 5.5(5) min β+ 102Ag 0+
103Cd 48 55 102.913419(17) 7.3(1) min β+ 103Ag 5/2+
104Cd 48 56 103.909849(10) 57.7(10) min β+ 104Ag 0+
105Cd 48 57 104.909468(12) 55.5(4) min β+ 105Ag 5/2+
106Cd 48 58 105.906459(6) 觀測上穩定[n 4] 0+ 0.0125(6)
107Cd 48 59 106.906618(6) 6.50(2) h β+ 107mAg 5/2+
108Cd 48 60 107.904184(6) 觀測上穩定[n 5] 0+ 0.0089(3)
109Cd 48 61 108.904982(4) 461.4(12) d ε 109Ag 5/2+
109m1Cd 59.6(4) keV 12(2) µs 1/2+
109m2Cd 463.0(5) keV 10.9(5) µs 11/2-
110Cd 48 62 109.9030021(29) 稳定[n 6] 0+ 0.1249(18)
111Cd[n 7] 48 63 110.9041781(29) 稳定[n 6] 1/2+ 0.1280(12)
111mCd 396.214(21) keV 48.50(9) min IT 111Cd 11/2-
112Cd[n 7] 48 64 111.9027578(29) 稳定[n 6] 0+ 0.2413(21)
113Cd[n 7][n 8] 48 65 112.9044017(29) 7.7(3)×1015 a β 113In 1/2+ 0.1222(12)
113mCd[n 7] 263.54(3) keV 14.1(5) a β (99.86%) 113In 11/2-
IT (.139%) 113Cd
114
Cd
[n 7]
48 66 113.9033585(29) 觀測上穩定[n 9] 0+ 0.2873(42)
115Cd[n 7] 48 67 114.9054310(29) 53.46(5) h β 115mIn 1/2+
115mCd 181.0(5) keV 44.56(24) d β 115mIn (11/2)-
116Cd[n 7][n 8] 48 68 115.904756(3) 3.1(4)×1019 a ββ 116Sn 0+ 0.0749(18)
117Cd 48 69 116.907219(4) 2.49(4) h β 117mIn 1/2+
117mCd 136.4(2) keV 3.36(5) h β 117mIn (11/2)-
118Cd 48 70 117.906915(22) 50.3(2) min β 118In 0+
119Cd 48 71 118.90992(9) 2.69(2) min β 119mIn (3/2+)
119mCd 146.54(11) keV 2.20(2) min β 119mIn (11/2-)#
120Cd 48 72 119.90985(2) 50.80(21) s β 120In 0+
121Cd 48 73 120.91298(9) 13.5(3) s β 121mIn (3/2+)
121mCd 214.86(15) keV 8.3(8) s β 121mIn (11/2-)
122Cd 48 74 121.91333(5) 5.24(3) s β 122In 0+
123Cd 48 75 122.91700(4) 2.10(2) s β 123mIn (3/2)+
123mCd 316.52(23) keV 1.82(3) s β 123In (11/2-)
IT 23Cd
124Cd 48 76 123.91765(7) 1.25(2) s β 124In 0+
125Cd 48 77 124.92125(7) 0.65(2) s β 125mIn (3/2+)#
125mCd 50(70) keV 570(90) ms β 125In 11/2-#
126Cd 48 78 125.92235(6) 0.515(17) s β 126In 0+
127Cd 48 79 126.92644(8) 0.37(7) s β 127mIn (3/2+)
128Cd 48 80 127.92776(32) 0.28(4) s β 128In 0+
129Cd 48 81 128.93215(32)# 242(8) ms β (>99.9%) 129In 3/2+#
IT (<.1%) 129Cd
129mCd 0(200)# keV 104(6) ms 11/2-#
130Cd 48 82 129.9339(3) 162(7) ms β (96%) 130In 0+
β, n (4%) 129In
131Cd 48 83 130.94067(32)# 68(3) ms 7/2-#
132Cd 48 84 131.94555(54)# 97(10) ms 0+

備註:畫上#號的數據代表沒有經過實驗的証明,只是理論推測而已,而用括號括起來的代表數據不確定性。


同位素列表
銀的同位素 鎘的同位素 銦的同位素

註釋[编辑]

  1. ^ Bold for isotopes with half-lives longer than the age of the universe (nearly stable)
  2. ^ Abbreviations:
    ε: 电子俘获
    IT: Isomeric transition
  3. ^ Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe)
  4. ^ Believed to decay by β+β+ to 106Pd with a half-life over 4.1×1020 years
  5. ^ Believed to decay by β+β+ to 108Pd with a half-life over 4.1×1017 years
  6. ^ 6.0 6.1 6.2 Theoretically capable of spontaneous fission
  7. ^ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 Fission product
  8. ^ 8.0 8.1 Primordial radionuclide
  9. ^ Believed to undergo ββ decay to 114Sn with a half-life over 6.4×1018 years

参考文獻[编辑]

  1. ^ http://www.nucleonica.net/unc.aspx
  2. ^ 2.0 2.1 2.2 G. Audi, O. Bersillon, J. Blachot, A.H. Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
  3. ^ 3.0 3.1 3.2 National Nuclear Data Center, Brookhaven National Laboratory, information extracted from the NuDat 2.1 database. (Retrieved Sept. 2005, from the code of the popup boxes).
  4. ^ 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.