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  • http://dspace.mit.edu/bitstream/handle/1721.1/37749/32108400-MIT.pdf?sequence=2
    The signals from the photomultiplier tube (ReA IP28 ) are fed into an amplifier circuit connected to a Tektronix 7904 oscilloscope equipped with a 7A22 amplifier of lMHz bandwidth and a 7B92A timebase.
  • Literature Citations, Part IV
    This improvement has been achieved through replacement of the red- sensitive phototube with a lead sulfide cell, replacement of the ultraviolet-sensitive photo- tube with an IP28 photomultiplier tube, pro- vision of a rotating, slotted drum to inter- rupt the light beam … The null meter circuit of the spec- trophotometer can be used if desired.
  • QUANTUM YIELDS OF TRIPLET FORMATION OF SOME DERIVATIVES OF ANTHRAQUINONE
    … sys- tem (Applied Photophysics) consists of a pulsed 250 W Xe arc. with circuit modified to give … The transmitted radi- ation was monitored through a high radiance mono- chromator (I nm bandwidth, blazed for 300 nm) by a fast response IP28 photomultiplier coupled through a 50 ohm resistor to a Tektronix 7603 oscilloscope.
  • THE CHEMILUMINESCENCE OF INDOLE DERIVATIVES IN DIMETHYL SULFOXIDE*
    A simple recording photometer equipped with an RCA IP28 photomultiplier tube was used for obtaining the relative chemiluminescence emission (Ill"), where I,, is the intensity of a reference standard tritiated phosphor. … output was measured in the later experiments by the addition of an integrating circuit to the output …
  • Light emission from hot electrons in zinc selenide
    IP28 photomultiplier whose output was monitored on a Tektronix 561A sampling oscilloscope. … close to the limit set by the diode capacitance and the series resistance of the diode circuit .
  • A fast triggered ultra-violet light source
    When the device is operated by the triggering circuit with the 0.005 PF capacitor charged to … The temporal characteristics were measured in the visible region, but an ultra-violet sensitive IP28 photomultiplier indicated no significant difference between the visible and ultra-violet regions, though there is some loss of frequency response when this photomultiplier is used with the …
  • Reciprocity failure in films of flash exposed dichromate sensitized polyvinyl alcohol
    The relative output of the lamp in the actinic ultra- violet at each choke setting and stored energy was obtained by using an RCA IP28 photomultiplier tube fitted with a Corning 7-54 glass filter (as well as several screens for a … … the current density through the flashlamp as the pulse duration is changed by reducing the circuit inductance.
  • The magnetic susceptibilities of weakly magnetic materials used in cryogenic apparatus
    When the device is operated by the triggering circuit with the 0.005 PF capacitor charged to … The temporal characteristics were measured in the visible region, but an ultra-violet sensitive IP28 photomultiplier indicated no significant difference between the visible and ultra-violet regions, though there is some loss of frequency response when this photomultiplier is used with the …
  • Reactivity of selected volatile organic compounds (VOCs) toward the sulfate radical (SO 4 − )
    The absorbance signals were measured by means of a photomultiplier built around a Hamamatsu IP28 tube run at 1400 V. … signal was first measured before the laser discharge by a sample-and-hold circuit and the corresponding …
  • Ligand replacement reactions of ferrous phthalocyanine in dimethylsulphoxide: confirmation that both steps can be observed
    … °C with FePc concentrations in the (1±10) ´ 10A6 mole dmA3 range, and base concentrations in large excess, using an Applied Photophysics 1711 apparatus equipped with quartz halogen lamp, Bausch and Lomb grating monochromator, and an IP28 photomultiplier tube operating on ®ve … The circuit between the inverting ampli®er, and the analogue/digital converter permitted accurate backing-o€ and ampli®cation so …