Atomic and sub-atomic charges particle, neutron and electro magnetic radiation detectors; electronic instruments and apparatus used for the control and measurement of atomic and sub-atomic particles; electronic instruments and apparatus used for amplification and calibration involving atomic and sub-atomic particles; devices designed to stimulate and permit calibration of the aforesaid apparatus, instruments and devices; apparatus, instruments and devices designed to simulate, control or measure the thermal, gaseous-atmosphere and air density environmental conditions of the foregoing apparatus, instruments and devices; apparatus, instruments, and devices designed to generate charged particle beams and plasmas from neutral gaseous atmospheres, and apparatus and instruments designed to amplify, modify and control such beams, all for application in acelerators, solar-wind simulation and on propulsion; scattering chambers; and scientific apparatus; instruments and devices, all included in Class 9 and for use in connection with nuclear, space, medical oceanographic, biological and botanical sciences, industrial research and for academic instruction.;