1 / 6

Chapter 60 – THE VSANS TECHNIQUE

Chapter 60 – THE VSANS TECHNIQUE. 60:1. MULTIPLE CIRCULAR CONVERGING COLLIMATION. 60:3. MULTIPLE SLIT CONVERGING COLLIMATION. 60:4. PERFORMANCE OF THE VARIOUS VSANS CONFIGURATIONS. 60:4. DISCUSSION. multiple circular source apertures. multiple circular sample apertures. y. z. x. r 1.

mufutau-bell
Download Presentation

Chapter 60 – THE VSANS TECHNIQUE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 60 – THE VSANS TECHNIQUE 60:1. MULTIPLE CIRCULAR CONVERGING COLLIMATION 60:3. MULTIPLE SLIT CONVERGING COLLIMATION 60:4. PERFORMANCE OF THE VARIOUS VSANS CONFIGURATIONS 60:4. DISCUSSION

  2. multiple circular source apertures multiple circular sample apertures y z x r1 L1 60:1. MULTIPLE CIRCULAR CONVERGING COLLIMATION

  3. source slits sample slits Dy1 L1 Dx1 60:3. MULTIPLE SLIT CONVERGING COLLIMATION

  4. 60:4. PERFORMANCE OF THE VARIOUS VSANS CONFIGURATIONS

  5. 60:4. DISCUSSION

  6. COMMENTS -- A VSANS instrument is 40 m long. A SANS instrument is 30 m long. -- Qmin for VSANS is one order of magnitude lower than that for SANS. -- Converging collimation lowers the Qmin without large penalty on the flux on sample. Overkill apertures are used to eliminate cross collimation. -- The use of converging lenses increases the flux on sample without penalty on resolution. -- A second high resolution detector is used for the low-Q.

More Related