釹嘅同位素
喺釹嘅同位素之中,有3個係穩定、唔會半衰嘅(142Nd、143Nd、146Nd),有兩個係會半衰、半不具放射性嘅(145Nd、148Nd),同2個係具放射性,但係有好長嘅半衰期嘅(144Nd、150Nd),重有一個係半衰期得三日但係會因為從由其他元素衰變得到補充而得以存在喺自然界中嘅140Nd,其餘嘅釹同位素都非常唔穩定,亦無法喺自然界中搵到,只可以喺實驗室透過粒子撞擊而合成。
圖表
編輯符號 | Z(p) | N(n) | 質量(u) | 半衰期 | 原子核自旋 | 相對豐度 | 相對豐度嘅變化率 |
---|---|---|---|---|---|---|---|
激發能量 | |||||||
124Nd | 60 | 64 | 123.95223(64)# | 500# ms | 0+ | ||
125Nd | 60 | 65 | 124.94888(43)# | 600(150) ms | 5/2(+#) | ||
126Nd | 60 | 66 | 125.94322(43)# | 1# s [>200 ns] | 0+ | ||
127Nd | 60 | 67 | 126.94050(43)# | 1.8(4) s | 5/2+# | ||
128Nd | 60 | 68 | 127.93539(21)# | 5# s | 0+ | ||
129Nd | 60 | 69 | 128.93319(22)# | 4.9(2) s | 5/2+# | ||
130Nd | 60 | 70 | 129.92851(3) | 21(3) s | 0+ | ||
131Nd | 60 | 71 | 130.92725(3) | 33(3) s | (5/2)(+#) | ||
132Nd | 60 | 72 | 131.923321(26) | 1.56(10) min | 0+ | ||
133Nd | 60 | 73 | 132.92235(5) | 70(10) s | (7/2+) | ||
133m1Nd | 127.97(11) keV | ~70 s | (1/2)+ | ||||
133m2Nd | 176.10(10) keV | ~300 ns | (9/2-) | ||||
134Nd | 60 | 74 | 133.918790(13) | 8.5(15) min | 0+ | ||
134mNd | 2293.1(4) keV | 410(30) µs | (8)- | ||||
135Nd | 60 | 75 | 134.918181(21) | 12.4(6) min | 9/2(-) | ||
135mNd | 65.0(2) keV | 5.5(5) min | (1/2+) | ||||
136Nd | 60 | 76 | 135.914976(13) | 50.65(33) min | 0+ | ||
137Nd | 60 | 77 | 136.914567(12) | 38.5(15) min | 1/2+ | ||
137mNd | 519.43(17) keV | 1.60(15) s | (11/2-) | ||||
138Nd | 60 | 78 | 137.911950(13) | 5.04(9) h | 0+ | ||
138mNd | 3174.9(4) keV | 410(50) ns | (10+) | ||||
139Nd | 60 | 79 | 138.911978(28) | 29.7(5) min | 3/2+ | ||
139m1Nd | 231.15(5) keV | 5.50(20) h | 11/2- | ||||
139m2Nd | 2570.9+X keV | >=141 ns | |||||
140Nd | 60 | 80 | 139.90955(3) | 3.37(2) d | 0+ | ||
140mNd | 2221.4(1) keV | 600(50) µs | 7- | ||||
141Nd | 60 | 81 | 140.909610(4) | 2.49(3) h | 3/2+ | ||
141mNd | 756.51(5) keV | 62.0(8) s | 11/2- | ||||
142Nd | 60 | 82 | 141.9077233(25) | 穩定 | 0+ | 0.272(5) | 0.2680-0.2730 |
143Nd | 60 | 83 | 142.9098143(25) | 穩定 | 7/2- | 0.122(2) | 0.1212-0.1232 |
144Nd | 60 | 84 | 143.9100873(25) | 2.29(16)E+15 a | 0+ | 0.238(3) | 0.2379-0.2397 |
145Nd | 60 | 85 | 144.9125736(25) | 穩定 [>60E+15 a] | 7/2- | 0.083(1) | 0.0823-0.0835 |
146Nd | 60 | 86 | 145.9131169(25) | 穩定 | 0+ | 0.172(3) | 0.1706-0.1735 |
147Nd | 60 | 87 | 146.9161004(25) | 10.98(1) d | 5/2- | ||
148Nd | 60 | 88 | 147.916893(3) | 穩定 [>3.0E+18 a] | 0+ | 0.057(1) | 0.0566-0.0578 |
149Nd | 60 | 89 | 148.920149(3) | 1.728(1) h | 5/2- | ||
150Nd | 60 | 90 | 149.920891(3) | 6.7(7)E+18 a | 0+ | 0.056(2) | 0.0553-0.0569 |
151Nd | 60 | 91 | 150.923829(3) | 12.44(7) min | 3/2+ | ||
152Nd | 60 | 92 | 151.924682(26) | 11.4(2) min | 0+ | ||
153Nd | 60 | 93 | 152.927698(29) | 31.6(10) s | (3/2)- | ||
154Nd | 60 | 94 | 153.92948(12) | 25.9(2) s | 0+ | ||
154m1Nd | 480(150)# keV | 1.3(5) µs | |||||
154m2Nd | 1349(10) keV | >1 µs | (5-) | ||||
155Nd | 60 | 95 | 154.93293(16)# | 8.9(2) s | 3/2-# | ||
156Nd | 60 | 96 | 155.93502(22) | 5.49(7) s | 0+ | ||
156mNd | 1432(5) keV | 135 ns | 5- | ||||
157Nd | 60 | 97 | 156.93903(21)# | 2# s [>300 ns] | 5/2-# | ||
158Nd | 60 | 98 | 157.94160(43)# | 700# ms [>300 ns] | 0+ | ||
159Nd | 60 | 99 | 158.94609(54)# | 500# ms | 7/2+# | ||
160Nd | 60 | 100 | 159.94909(64)# | 300# ms | 0+ | ||
161Nd | 60 | 101 | 160.95388(75)# | 200# ms | 1/2-# |
備註:有#嘅數據代表冇經過實驗嘅證明,只係理論推測,而用咗括號括係代表數據唔確定。
參攷
編輯- 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.
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