Coherent and Incoherent Scattering Cross Sections of Some Lead and Sodium Compounds at Angles below 10° for ²⁴¹Am Gamma Rays

Table 1

Total (coherent + incoherent) scattering cross section of 59.54 keV gamma rays for some lead and sodium compounds (barn/mole). (Experimental errors are to the extent of 3% to 5%).

Compounds	𝑑; in cm	Angle 𝜃; in deg	Total scattering cross section; Δ𝜎sca (coh + incoh); (in barn/mole)
			Present	NRHF
Sodium hydroxide (NaOH)	29.88	4	0.37±0.01	0.38
	19.88	6	0.67±0.02	0.69
	14.87	8	1.01±0.05	1.06
	11.85	10	1.43±0.05	1.48
Sodium bicarbonate (NaHCO3)	29.88	4	1.74±0.04	1.78
	19.88	6	3.21±0.06	3.27
	14.87	8	5.00±0.02	5.02
	11.85	10	7.05±0.04	7.01
Sodium bromate (NaBrO3)	29.88	4	5.27±0.05	5.22
	19.88	6	9.58±0.03	9.55
	14.87	8	14.90±0.20	14.70
	11.85	10	20.40±0.10	20.50
Sodium periodate (NaIO4)	29.88	4	10.40±0.31	10.10
	19.88	6	18.70±0.20	18.50
	14.87	8	28.60±0.10	28.50
	11.85	10	39.80±0.00	39.80
Lead format Pb(CHO2)2	29.88	4	18.48±0.02	18.50
	19.88	6	34.00±0.10	33.90
	14.87	8	52.20±0.10	52.10
	11.85	10	73.00±0.20	72.80
Lead sulphate PbSO4	29.88	4	19.20±0.10	19.10
	19.88	6	35.20±0.10	35.10
	14.87	8	54.00±0.10	53.90
	11.85	10	75.10±0.10	75.20
Lead nitrate Pb(NO3)2	29.88	4	23.80±0.10	23.70
	19.88	6	43.60±0.10	43.50
	14.87	8	66.90±0.10	66.80
	11.85	10	93.30±0.10	93.20