Phys. Rev. 30, 488–493 (1927)Direction of Photo-Electron EmissionReceived 1 July 1927; published in the issue dated October 1927 Direction of emission of photoelectrons from hydrogen, air and argon irradiated by Mo Kα x-rays.—Photographs of the photo-electron tracks in a Wilson expansion chamber through which a narrow beam of monochromatic Mo Kα x-rays were passed were taken with a stereoscopic camera. The direction of the paths with respect to the x-ray beam was determined from measurements made with a specially designed stereoscopic comparator. 445 tracks were studied of which 231 were in argon, 123 in air and 91 in hydrogen. Curves showing the frequency of occurrence of different angles of ejection have a fairly sharp maximum for angles of about 70° with the forward direction of the x-ray beam. The curves are similar for the three gases studied except that the maximum in the case of hydrogen is somewhat sharper than for the other two gases. © 1927 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.30.488
DOI:
10.1103/PhysRev.30.488
PACS:
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.