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1. Introduction
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Contents
Contents
1
. Introduction
1
.
1
Neutral Particle Imaging
1
.
2
Neutral Interstellar gas Composition Experiment NICE
1
.
3
ASPERA-3: Start and Stop Surfaces for the NPD Sensor
1
.
4
Document Outline
2
. Experimental Setup and Investigated Surfaces
2
.
1
Surfaces
2
.
1
.
1
Overview
2
.
1
.
2
Magnesium Oxide and Aluminum Oxide Surfaces
2
.
1
.
3
Multilayer Samples
2
.
1
.
4
Diamond
2
.
1
.
5
Bulk Metals
2
.
2
ILENA Setup
2
.
3
JUSO Setup
3
. Secondary Electron Yield
3
.
1
Motivation
3
.
2
Methods
3
.
2
.
1
Net Charge Exchange Model
3
.
2
.
2
Automated Measurement
3
.
3
Results
3
.
3
.
1
Overview
3
.
3
.
2
Angular Dependence
3
.
3
.
3
Time Dependence and UV Sensitivity
3
.
4
Discussion
4
. Angular Scattering and Reflection Efficiency
4
.
1
Motivation
4
.
2
Methods
4
.
2
.
1
Angular scattering
4
.
2
.
2
Reflection efficiency
4
.
2
.
3
NPD Relative Detection Efficiency
4
.
3
Results
4
.
3
.
1
Overview
4
.
3
.
2
Surface Charging
4
.
4
Discussion
5
. Ionization upon Scattering of a Surface
5
.
1
Motivation
5
.
2
ILENA Setup
5
.
2
.
1
Overview
5
.
2
.
2
Data Processing
5
.
3
JUSO Setup
5
.
3
.
1
Overview
5
.
3
.
2
Time Of Flight to Energy Conversion
5
.
3
.
3
Detection Efficiency
5
.
3
.
4
Peak Fitting
5
.
3
.
5
Dissociation Energy
5
.
3
.
6
Data Processing
5
.
4
The Surface
5
.
5
MgO Paper
5
.
6
MgO Further Discussion
5
.
6
.
1
Dissociation
5
.
6
.
2
Charge State Fractions
5
.
6
.
3
Energy Loss and Straggling
5
.
6
.
4
Temperature Dependence
5
.
7
Conclusions
6
. Neutral Interstellar gas Composition Experiment
6
.
1
Introduction
6
.
2
Experimental
6
.
2
.
1
Overview
6
.
2
.
2
Neutral Source
6
.
2
.
3
Conversion Surfaces
6
.
2
.
4
Secondary Electron Deflection
6
.
2
.
5
Extraction Lens
6
.
2
.
6
TOF
6
.
2
.
7
Moving Parts and Electrostatic Shields
6
.
2
.
8
Estimation of Overall Efficiency
6
.
3
Results
6
.
3
.
1
Ion measurements
6
.
3
.
2
Neutral Measurements
6
.
4
Discussion
6
.
5
Conclusions
Acknowledgement
Bibliography
About this document ...
March 2001 - Martin Wieser, Physikalisches Institut, University of Berne, Switzerland
