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The manual of the 10-420 Toroidal Monochromator can be found here and below, these notes are a summary of the manual.

PHI 5600: Model 10-420 Toroidal Monochromator


(normalized to maximum peak intensity). Monochromatic peaks are cleaner and thinner.


Model 10-420 Toroidal Monochromator  Section I: INTRODUCTION

This manual is intended to assist users in the installation, operation, and maintenance of the PHI Model 10-420 Toroidal Monochromator. The manual is divided into five sections. Section I contains a brief description and specifications of the unit. Section II refers to checkout procedures and installation. Section III describes the operation of the toroidal monochromator, while Section IV explains the theory of operation. Calibration and maintenance are discussed in Section V.

The PHI Model 10-420 Toroidal Monochromator is designed to be used on the PHI 5500/5600 MultiTechnique Systems and consists of a crystal assembly, a crystal manipulator and the monochromator housing. The monochromator housing contains two flanges for mounting onto the test chamber and the x-ray source. Mounting on test chambers of other systems can also be done, if they have a 6.95 inch port length and adequate clearance conditions . The toroidal monochromator's crystal assembly and crystal manipulator are both mounted in the monochromator housing. The crystal assembly is composed of a set of precisely oriented quartz crystals. This set of crystals is aligned by the crystal manipulator, to produce a monochromated x-ray beam. The manipulator has three separate motions for crystal alignment: translation and two directions of tilt. A shutter is provided on the Model10-420 Toroidal Monochromator monochromator housing to shield the crystal assembly and monochromator during sputtering. The monochromator provides the following advantages over the standard dual-anode x-ray source: improved energy resolution, lower specttal backgrounds, the absence of certain satellites and "ghost" peaks, and reduced sample damage.

Figure 1-1 shows how the toroidal monochromator package interfaces with the analytical system. The package consists of the PHI Modell0-600 X-Ray Source, an x-ray source aligner which connects the x-ray source to the monochromator, and associated cables and water lines. The toroidal monochromator bolts to, and is supported by, a six inch flange on the bell jar. If the system configruation includes a standard PHI Model 04-548 X-Ray Source, the PHI Model 20-040 High Voltage Supply is wired to both sources, and switching between the two sources is controlled either manually or by the computer through the PHI Model32-096 X-Ray Source Control. Anode cooling is provided by the standard PHI Model 16-050 Heat Exchanger with the two sources plumbed in series.

1.4.1 Count Rates and Resolution Omni Focus II Lens in high solid angle mode (Omni Focus III Lens in high solid angle mode) 
The Al monochromator operating at 14 kV on a smooth, sputter-cleaned sample of silver (Ag 3d5!2 peak) will meet or exceed the curve defined by the following performance specifications for a 1.1 mm dia. analysis area:    

 Anode Power        Detector          Resolution FWHM (eV)          Sensitivity cps