Camera de Rich:
Esta microcámara era es similar a la que utilizaba Rosalind Franklin.
La microcámara “Rich” era originalmente un diseño de F. Chesley para Philips Electronic Instruments, al que se le habían hecho algunas modificaciones. Servían para obtener con cierta rapidez la difracción de alto ángulo (WAXS o Wide Angle X-Ray Scattering), y que correspondía a pequeñas distancias repetitivas de repetición de entre 3 y 30 Å. Como colimador se disponía de un cristal con un pequeño orificio central, el vidrio era de plomo que amortiguaba el haz salvo lo que pasaba por su orificio. Así se definía un haz estrecho y de sección circular que era el que incidía en la muestra para realizar la difracción. Dentro de la cámara se sacaba el aire que era un freno a la difracción, ya sea haciendo el vacío o bien inyectando una corriente de hidrógeno que era mucho más transparente.
Rich Camera:
This micro-camera is similar to the one Rosalind Franklin used.
The "Rich" micro-camera was originally designed by F. Chesley for Philips Electronic Instruments, which had undergone some modifications. They were used to obtain high-angle diffraction (WAXS or Wide Angle X-Ray Scattering) with a certain speed, which corresponded to small repeat distances of between 3 and 30 Å. As a collimator, there was a glass with a small central hole, the glass was made of lead that damped the beam except for what passed through its hole. This defined a narrow beam of circular section which reached the sample and was diffracted toward the chamber. To avoid the diffracted beam to be slowed down, air was removed from the chamber , either by making vacuum or by injecting a flow of hydrogen that was much more transparent.