https://physlab-wiki.com/ 2026-04-14T16:56:20+00:00 https://physlab-wiki.com/ https://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2024-06-11T16:44:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-211-wiki-home/inactive/relativistic-electrons/relativistic_electrons_analysis?rev=1718138676&do=diff I collect spectra using a high purity germanium (HPGe) detector operating at liquid nitrogen temperature. The detector is run with a -1500 V bias and the detector preamplifier output (negative polarity) is passed through a NIM module amplifier. The output (positive polarity) is scaled to an appropriate range (0-8 V) for direct input into a Spectrum Techniques UCS-30 pulse-height analyzer (PHA) controlled by the USX software program, with the amplifier gain set so that a highest PHA channel corre… text/html 2024-06-11T16:45:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-211-wiki-home/inactive/relativistic-electrons/start?rev=1718138708&do=diff Relativistic Electrons Direct tests of special relativity are rare in the undergraduate laboratory as they often require large and expensive particle accelerators. In this experiment, we will use a low-tech – but very accurate – gamma detection technique to measure both the kinetic energy and momentum of electrons produced during Compton scattering. In addition to $m$$T=p^2/2m$$T$$p$$E = pc$$E$$p$$c$$E_\gamma$$T$$\theta \lt 180^\circ$$p_\gamma = p - p^\prime_\gamma$$p$$p^\prime_\gamma$$E_\gamma…