The Production of Characteristic X-Rays by Deuteron Bombardment

It is shown by a photographic method that for deuterons of 10 Mev, characteristic $K$ radiation is emitted from targets of atomic number 38 or less. Because of absorption, the intensity appears to have a maximum for elements of atomic number about 28. Similarly, $L$ radiation is observed for the heavier elements with a maximum in the neighborhood of atomic number 64. For a copper target the yield of x-rays is observed as a function of the exciting energy. The results are compared with the theoretical calculations of Henneberg.