Izotopii bromului

Izotopii bromului sunt reprezentați în tabelul următor:

Izotop	Z (p)	N (n)	Masă izotopică (u.a.m)	$\mathrm {T_{\frac {1}{2}}}$	Tipul dezintegrării	Izotop descendent	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

• V. Vasilescu (coordonator) Biofizică medicală, EDP 1977 anexa 8, p 309-315
• http://en.wikipedia.org/wiki/Isotopes_of_bromine