SDG: Massspec a Flashcards by Thomas Hasiweder

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Overview

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Introduction

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Brief history of mass spectrometry

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Desirable features of MS

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Atomic/molecular masses and m/z ratio

3 types of mass

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General applications

Physics

Chemistry

Environment

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General applications

medicine

pharmacy

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Basic principles of MS

4 basic steps

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Basic Principles of MS

modular concept

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A modular concept with unlimited capabilities

lets go shopping!

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A modular concept with unlimited capabilities

how many combinations?

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Some useful combinations for material science

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Modular concepts – basic requirements

sample interface

ion source

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Modular concepts – basic requirements

analyser

vacuum system

detection

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Basic concepts of gasses and vacuum

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Q

Pressure Units and Ranges

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Mean free path and gas flow regimes

equations

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Mean free path and gas flow regimes

compare high and low pressures

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Gas / solid interactions

equilibrium

adsorption

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Q

Gas / solid interactions

outgassing

impingement rate

sticking coefficient

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Q

Vacuum pumps - terminology

closed and open systems

requirements

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Vacuum pumps - types

by the way they remove the gas

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Vacuum pumps – working regime

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Vacuum pumps – pump speed

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Vacuum pumps – pump speed, conductance and throughput

Vacuum pumps - types rough vs high vacuum

Vacuum pumps – rough pumps

Vacuum pumps – high vacuum pumps cryogenic

Vacuum pumps – high vacuum pumps turbomolecular

Total pressure measurement

Capacitance manometers

Thermocouple gauges

Pirani gauges

Ionization (high vacuum) gauges