Izotopii bromului sunt reprezentați în tabelul următor:

Izotop Z (p) N (n) Masă izotopică (u.a.m) Tipul dezintegrării[1][n 1] Izotop descendent[n 2] Spin nuclear Abundență izotopică
(fracție molară)
Abundență naturală
(fracție molară)
Energie de dezintegrare
66Br 35 31 p 65Se
67Br 35 32 66,96479(54)# p 66Se 1/2-#
68Br 35 33 67,95852(38)# <1,2 µs p 67Se 3+#
69Br 35 34 68,95011(11)# <24 ns p 68Se 1/2-#
70Br 35 35 69,94479(33)# 79,1(8) ms β+ 70Se 0+#
70mBr 2292,2(8) keV 2,2(2) s β+ 70Se (9+)
IT 70Br
71Br 35 36 70,93874(61) 21,4(6) s β+ 71Se (5/2)-
72Br 35 37 71,93664(6) 78,6(24) s β+ 72Se 1+
72mBr 100,92(3) keV 10.6(3) s IT (>99.9%) 72Br 1-
β+ (<.1%) 72Se
73Br 35 38 72,.93169(5) 3,4(2) min β+ 73Se 1/2-
74Br 35 39 73,929891(16) 25,4(3) min β+ 74Se (0-)
74mBr 13,58(21) keV 46(2) min β+ 74Se 4(+#)
75Br 35 40 74,925776(15) 96,7(13) min β+ 75Se 3/2-
76Br 35 41 75,924541(10) 16,2(2) h β+ 76Se 1-
76mBr 102,58(3) keV 1.31(2) s IT (99.4%) 76Br (4)+
β+ (.6%) 76Se
77Br 35 42 76,921379(3) 57,036(6) h β+ 77Se 3/2-
77mBr 105,86(8) keV 4,28(10) min IT 77Br 9/2+
78Br 35 43 77,921146(4) 6,46(4) min β+ (99,99%) 78Se 1+
β- (0.01%) 78Kr
78mBr 180,82(13) keV 119,2(10) µs (4+)
79Br 35 44 78,9183371(22) Stabil 3/2- 0.5069(7)
79mBr 207,61(9) keV 4,86(4) s IT 79Br (9/2+)
80Br 35 45 79,9185293(22) 17,68(2) min β- (91.7%) 80Kr 1+
β+ (8.3%) 80Se
80mBr 85,843(4) keV 4,4205(8) h IT 80Br 5-
81Br 35 46 80,9162906(21) Stabili 3/2- 0,4931(7)
81mBr 536,20(9) keV 34,6(28) µs 9/2+
82Br 35 47 81,9168041(21) 35,282(7) h β- 82Kr 5-
82mBr 45,9492(10) keV 6,13(5) min IT 82Br 2-
β- 82Kr
83Br 35 48 82,915180(5) 2,40(2) h β- 83Kr 3/2-
83mBr 3068,8(6) keV 700(100) ns (19/2-)
84Br 35 49 83,916479(16) 31,80(8) min β- 84Kr 2-
84m1Br 320(10) keV 6,0(2) min β- 84Kr 6-
84m2Br 408,2(4) keV <140 ns 1+
85Br 35 50 84,915608(21) 2,90(6) min β- 85Kr 3/2-
86Br 35 51 85,918798(12) 55,1(4) s β- 86Kr (2-)
87Br 35 52 86,920711(19) 55,65(13) s β- (97,48%) 87Kr 3/2-
β-, n (2,52%) 86Kr
88Br 35 53 87,92407(4) 16,29(6) s β- (93,42%) 88Kr (2-)
β-, n (6,48%) 87Kr
88mBr 272,7(3) keV 5,4(7) µs
89Br 35 54 88,92639(6) 4,40(3) s β- (86,2%) 89Kr (3/2-,5/2-)
β-, n (13,8%) 88Kr
90Br 35 55 89,93063(8) 1,91(1) s β- (74,8%) 90Kr
β-, n (25,2%) 89Kr
91Br 35 56 90,93397(8) 541(5) ms β- (80%) 91Kr 3/2-#
β-, n (20%) 90Kr
92Br 35 57 91,93926(5) 0,343(15) s β- (66,9%) 92Kr (2-)
β-, n (33,1%) 91Kr
93Br 35 58 92,94305(32)# 102(10) ms β- (89%) 93Kr 3/2-#
β-, n (11%) 92Kr
94Br 35 59 93,94868(43)# 70(20) ms β- (70%) 94Kr
β-, n (30%) 93Kr
95Br 35 60 94,95287(54)# 50# ms [>300 ns] 3/2-#
96Br 35 61 95,95853(75)# 20# ms [>300 ns]
97Br 35 62 96,96280(86)# 10# ms [>300 ns] 3/2-#

Bibliografie

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Referințe

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  1. ^ Abrevieri:
    CE: Captură de electron
    TI: Tranziție izomerică
  2. ^ Izotopii stabili sunt trecuți cu caractere boldate