Скачать или смотреть Time-of-Flight MCP detector for detection of electrons, ions and photons [email protected]

Time-of-Flight MCP detector MCP-MA 25/2 [email protected]

Microchannel Plate Detectors MCP-MA series are an open MCP detectors with one or more microchannel plates and a single metal anode. They are intended for time-resolved detection and make use of high-speed response properties of the MCPs. MCP-MA detectors are designed for photons and particles detection in vacuum chambers or in the space. MCP-MA detectors are used in a variety of applications including UV, VUV and EUV spectroscopy, atomic and molecular physics, TOF mass--spectrometry of clusters and biomolecules, surface studies and space research.
MCP-MA detectors supplied as a totally assembled unit that can be easily mounted on any support substrate or directly on a vacuum flange. They also can be supplied premounted on a standard ConFlat flanges.
http://www.dmphotonics.com/MCP_MCPIma...
Mass spectrometry - Photoionization - Electron microscopy - Surface physics - UV and VUV imaging - Astronomy - Space telescopes - Fusion research - Synchrotron Radiation - Nuclear physics - Field ion microscopy - Low temperature physics - Neutron Detectors - Neutron Radiography and Tomography - Scanning Near field Microscopy - Accelerators - Plasma Physics - Cluster research - Fluorescent detection - Trace analysis
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Featured research:

Research Interests

Research in our group is focused on gas-phase ion spectroscopy, with a particular emphasis on problems related to reactive intermediates and cluster ions. Our experiments require careful ion synthesis, followed by mass selection in a mass spectrometer. We learn about the ion properties by 1) using infrared or UV lasers to detach electrons in photoelectron imaging or 2) electronic or vibrational spectroscopy by photodissociation.

1. Reactive intermediates. Radicals, carbenes and other exotic reactive intermediates are difficult to observe experimentally due to their highly reactive nature, whereas studies of these molecules are vital for verifying and understanding reaction mechanisms. Because these molecules all have at least one partially filled orbital, they readily add extra electrons to form stable negative ions. We exploit this property by generating anion analogs of reactive intermediates and then remove the electron by laser excitation. For these studies, photoelectron imaging is especially powerful because electron detachment yields detailed information on the electronic states and orbital symmetries of the neutral intermediates. One of our major goals in this field is to study perturbation effects on electronic structure arising from heteroatom substitution at various locations within a molecular framework.

2. Cluster ions. Small, size-selected, cluster ions are ideal model systems for studying solvent-solute interactions under carefully controlled conditions. In this experiment we learn about microsolvation, systems that are best described as heterogeneous nanodroplets. Clusters are important because they provide the link between isolated gaseous ions and their solvated (bulk) counterparts. We identify vibrations in small clusters, which are characteristic of the spatial arrangement of atoms. These vibrational frequencies may shift, change intensity, disappear, or new modes might appear as the degree of solvation increases and the structure adopts a configuration similar to that found in the condensed phase. These spectral fingerprints can be used to determine the local solvent-solute structure in solution.