P6.3.3.5 LEYBOLD Physics Leaflets Evaluation In the diagram,click the right mouse button to access the evaluation functions of the software"X-ray Apparatus"and select the command "Calculate Integral". Using the left mouse button,mark the peaks of the char- acteristic lines one after another and read their integral counting rate R in the bottom left corner of the diagram window. Calculate the ratio V of the Kg-radiation to the total char- acteristic radiation. R(KB) V=R(K)+R(Kg) Table 2:Integral counting rates of the characteristic lines and respective proportion of Kg-line. R(Ka) R(Kg) S-1 s-1 without Zr-Filter 4586 1288 0.22 with Zr-Filter 3897 137 0.034 Results The proportion of KB radiation making up the characteristic radiation of the Mo anode is significantly reduced when the zirconium foil is used.This means that: The characteristic radiation of the Mo anode is approximately monochromatized through absorption in a zirconium foil. Literature [1]C.M.Lederer and V.S.Shirley,Table of Isotopes,7th Edition,1978,John Wiley Sons,Inc.,New York,USA. LEYBOLD DIDACTIC GMBH.Leyboldstrasse 1.D-50354 Hurth.Phone (02233)604-0.Telefax(02233)604-222.Telex 17 223 332 LHPCGN D by Leybold Didactic GmbH Printed in the Federal Republic of Germany Technical alterations reservedEvaluation – In the diagram, click the right mouse button to access the evaluation functions of the software “X-ray Apparatus” and select the command “Calculate Integral”. – Using the left mouse button, mark the peaks of the char￾acteristic lines one after another and read their integral counting rate RI in the bottom left corner of the diagram window. – Calculate the ratio V of the Kb-radiation to the total char￾acteristic radiation. V = Ri (Kb) Ri (Ka) + Ri (Kb) Results The proportion of Kb radiation making up the characteristic radiation of the Mo anode is significantly reduced when the zirconium foil is used. This means that: The characteristic radiation of the Mo anode is approximately monochromatized through absorption in a zirconium foil. Literature [1] C. M. Lederer and V. S. Shirley, Table of Isotopes, 7th Edition, 1978, John Wiley & Sons, Inc., New York, USA. Table 2: Integral counting rates of the characteristic lines and respective proportion of Kb-line. Ri (Ka) s − 1 Ri (Kb) s − 1 V without Zr-Filter 4586 1288 0.22 with Zr-Filter 3897 137 0.034 LEYBOLD DIDACTIC GMBH ⋅ Leyboldstrasse 1 ⋅ D-50354 Hürth ⋅ Phone (02233) 604-0 ⋅ Telefax (02233) 604-222 ⋅ Telex 17 223 332 LHPCGN D © by Leybold Didactic GmbH Printed in the Federal Republic of Germany Technical alterations reserved P6.3.3.5 LEYBOLD Physics Leaflets