MicroChannel plate schematic

Figure Bl.23.10. Schematic diagram of a scattering and recoiling imaging spectrometer (SARIS). A large-area (95 X 75 nnn ), time-resolving, position-sensitive microchannel plate (MCP) detector captures a large...

Figure 2. Schematic of apparatus for ZEKE-PFI spectroscopy, including magnetically shielded electron flight path and microchannel plate detector. Not to scale flight path is 50 cm long interaction zone is 1 cm long.

Figure 2. Schematic diagram of the imaging apparatus with ion lens. The detector is a dual microchannel plate/phosphor screen assembly (40 mm active diameter) coupled with a CCD camera. Electric field lines are shown to illustrate the ion lens. Equipotential surfaces in the repeller/extractor region are also included.

Figure 3. Schematic drawing of a microchannel plate detector for neutron radiography. Channel diameters range from 6 to 12 p.m, and typical wall thickness are about 2 p.m. The high voltage depends on the particular MCP used and can range from 2 to 6 kV.

Fig. 2.2. Schematic diagram of a reflectron-type time-of-flight mass spectrometer and the look. The polarization of the fundamental pulse of 0.8 pm was parallel to the flight axis. Typical applied voltages for ion extraction and the microchannel plate (MCP) were 3kV and —2.1kV, respectively...

Fig. 2. Schematic diagram of the apparatus. The superconducting magnetic coils create trapping potential that confines atoms near the focus of the 243 nm laser beam. The beam is focused to a 50 pm waist radius and retro-reflected to allow for Doppler-free excitation. After excitation, fluorescence is induced by an applied electric field. A small fraction of the 122 nm fluorescence photons are counted on a microchannel plate detector. Not shown is the trapping cell which surrounds the sample and is thermally anchored to a dilution refrigerator. The actual trap is longer and narrower than indicated in the diagram...

Figure 1 Schematic of the atomic beam dosing source used with REMPI detection by Murphy et al. to study the recombination of H [36, 37] and N [38] at metal single crystal surfaces. A single crystal surface is supported on a manipulator in the path of a collimated molecular beam. The beam supplies reactant molecules or atoms, produced using a microwave discharge in the glass nozzle, which react and recombine at the surface. The reaction products are ionised by the laser, which is focused in front of the surface (inset), and the resulting ions are timed into a microchannel plate detector.

Figure 5 Schematic diagram of an experimental set-up for the state-selective study of laser-induced desorption. KDP potassium dideuterium phosphate crystal, BBO p-barium borate crystal, MCP microchannel plate [11].

Figure C3.1.5. Schematic diagram of an intensifier-gated optical multichannel analyser (OMA) detector. The detector consists of a microchannel plate (MCP) image intensifier followed by a 1024-channel Reticon photodiode array. Light dispersed across the semitransparent photocathode ejects photoelectrons. These are accelerated toward the entrance of the microchannels by the gate pulse. The photoelectrons collide with the channel walls to produce secondary electrons, which are accelerated in turn by the MCP bias voltage to produce further collisions and electron multiplication. Electrons leaving the microchannels are further accelerated by the phosphor bias voltage.

A schematic diagram of the experimental apparatus is shown in Figure 35. The experimental apparatus has been modified from the laser-ionization TOF mass spectrometer described in Section UFA (see Fig. 22) [58,59]. A two-stage microchannel plate detector and a set of simple aperture lenses have been added for PE detection below the photoionization region and opposite to the ion TOF tube. 

Figure 14.7 (a) A schematic channel electron multiplier. A thin film conductive layer inside the tube serves as a continuous dynode surface, (b) A schematic microchannel plate configuration. [Both figures courtesy of Hamamatsu Corporation, Bridgewater, NJ (www.usa.hamamatsu.com).]... 

FIGURE 28.5 Schematic drawing of the PTR-TOF-MS system with a hollow cathode ion source. SD, source drift tube FDT, flow drift tube TO, transfer optics MCP, microchannel plate. Reprinted with permission from Reference [15]. Copyright 2005 Elsevier. 

Fig.4.98a-c. MicroChannel plate (MCP) (a) schematic construction (b) electron avalanche in one channel (c) schematic arrangement of MCP detector with spatial resolution... 

Herein will be considered the MALDI-tof-ms with a microchannel plate (MCP) detector (see Fig. 1 for the schematic of a linear MALDI-tof-ms and Fig. 2 for the schematic of a reflectron MALDI-tof-ms). This is currently the instrument most commonly used to analyze synthetic polymers. 

Figure 3.1 schematically represents time-resolved experimental setup used in our experiments. The excitation sources were pulsed lasers, such as excimer XeCl (308 nm), nitrogen (337 run), three harmonics of Nd-YAG (266, 355 and 532 nm), and tunable dye and OPO, which deliver pulses of 10 ns duration. The spectra observed at the geometry of 90° are analyzed by intensified CCD matrix. Image intensifiers comprise three main components a photocathode, microchannel plate (MCP) and phosphor screen. The standard operation of these devices starts when the incident photons become converted into electrons at the photocathode. The electrons then accelerated towards the MCP where they are multiplied to an amount... 

Fig. 7.1. Schematic diagram of the TOF-ESD microscopy system, termed the protoscope . A pencil-type electron gun for SEM and conventional low energy electron diffraction (LEED) gun for LEED, Auger electron spectroscopy (AES), and (electron stimulated desorption ion angular distribution (ESDIAD) are combined with an ion detector consisting of microchannel plates (MCPs) and a phosphor screen.

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