Main emission energies:

Nuclide Half-life E(α) keV E(β) keV E(γ) keV Röntgen

Th-232 14 Ga 4012 63.8 (0.3%) 88.5 Ra K_α1 (0.003%)
12.3 Ra L_α1 (2%)
15.2 Ra L_β1 (3%)

Ra-228 5.75 a 39.2 (40%) 13.5 (2%) 12.7 Ac L_{α1 (1%)}
15.7 Ac L_{β1 (0.4%)}

Ac-228 6.15 h 1158 (30%) 911 (26%)
969 (16%)
338 (11%) 93.4 Th K_α1 (3%)
13.0 Th L_α1 (11%)
16.2 Th L_β1 (13%)

Th-228 1.9 a 5423 84.3 (1%) 88.5 Ra K_α1 (0.03%)
12.3 Ra L_α1 (3%)

Ra-224 3.66 d 6585 241 (4%) 83.8 Rn K_α1 (0.2%)
11.7 Rn L_α1 (0.1%)

Rn-220 56 s 6288 550 (0.1%)

Po-216 0.15 s 6778

Pb-212 10 h 335 (82%) 239 (43%) 77.1 Bi K_α1 (18%)
10.8 Bi L_α1 (6%)

Bi-212 61 m 6051 2254 (55%) 727 (7%)
1620 (1%) 79.3 Po K_α1 (0.1%)
11.1 Po L_α1 (0.02%)
72.9 Tl K_α1 (0.1%)
10.3 Tl L_α1 (3%)

Po-212 0.3 µs 8784 75.0 Pb K_α1 (weak)
10.6 Pb L_α1 (weak)

Tl-208 22.3 y 1903 (49%) 2615 (99%)
583 (85%)
511 (23%)
860 (12%)
277 (6%) 75.0 Pb K_α1 (4%)
10.6 Pb L_α1 (1%)
12.6 Pb L_β12 (1%)

Pb-208 stable

Nuclide	Half-life	E(α) keV	E(β) keV	E(γ) keV	Röntgen
Th-232	14 Ga	4012		63.8 (0.3%)	88.5 Ra K_α1 (0.003%) 12.3 Ra L_α1 (2%) 15.2 Ra L_β1 (3%)
Ra-228	5.75 a		39.2 (40%)	13.5 (2%)	12.7 Ac L_{α1 (1%)} 15.7 Ac L_{β1 (0.4%)}
Ac-228	6.15 h		1158 (30%)	911 (26%) 969 (16%) 338 (11%)	93.4 Th K_α1 (3%) 13.0 Th L_α1 (11%) 16.2 Th L_β1 (13%)
Th-228	1.9 a	5423		84.3 (1%)	88.5 Ra K_α1 (0.03%) 12.3 Ra L_α1 (3%)
Ra-224	3.66 d	6585		241 (4%)	83.8 Rn K_α1 (0.2%) 11.7 Rn L_α1 (0.1%)
Rn-220	56 s	6288		550 (0.1%)
Po-216	0.15 s	6778
Pb-212	10 h		335 (82%)	239 (43%)	77.1 Bi K_α1 (18%) 10.8 Bi L_α1 (6%)
Bi-212	61 m	6051	2254 (55%)	727 (7%) 1620 (1%)	79.3 Po K_α1 (0.1%) 11.1 Po L_α1 (0.02%) 72.9 Tl K_α1 (0.1%) 10.3 Tl L_α1 (3%)
Po-212	0.3 µs	8784			75.0 Pb K_α1 (weak) 10.6 Pb L_α1 (weak)
Tl-208	22.3 y		1903 (49%)	2615 (99%) 583 (85%) 511 (23%) 860 (12%) 277 (6%)	75.0 Pb K_α1 (4%) 10.6 Pb L_α1 (1%) 12.6 Pb L_β12 (1%)
Pb-208	stable