Conventionally XRR, X-Ray Reflectivity, measurements have been conducted using a point or line source but always using the 0D point/scintillation/proportional type detector without spatial resolution. The 0D mode is the most commonly and successfully employed methodology.
The advent of 2D detectors and real time imaging today have created endless possibilities. Is anyone in this erudite RG community aware of implementation of XRR in the topographic mode to date? Please share your expertise and knowledge in this very interesting field of XRR with numerous practical applications.
Any helpful literature references would embellish us all. Thanks in advance for sharing!
https://www.researchgate.net/post/Would_anyone_have_a_clue_as_to_the_origin_of_unexpected_spots_in_the_real_time_2D_XRR_signal_from_thin_film_samples_on_substrates_Yuneda_Spots
https://www.youtube.com/watch?v=7My4_17mACo&index=49&list=PL7032E2DAF1F3941F
http://www.northeastern.edu/nanomagnetism/downloads/Basic%20Principles%20of%20X-ray%20Reflectivity%20in%20Thin%20Films%20-%20Felix%20Jimenez-Villacorta%20[Compatibility%20Mode].pdf
I think YES! I'll have some INTUITIVE evidence of feasibility later this evening. Excited about it!
https://www.flickr.com/photos/85210325@N04/10242907544/in/album-72157645018820696/
W radiation 75kV 5mA dental radiography source without any filter. The specimen was a brass plate with 0.5mm holes spaced 10mm apart. I'll double check the dimensions with a Vernier and post.
Two geometries explored:
1. Detector plane parallel to the specimen and perpendicular to the incident beam. (Position # 1 in figure below of the geometry)
2. Detector at about 40 degrees to specimen brass plate while specimen surface is perpendicular to the incident beam. (Position # 2 & 3) This will expand the incident (or diffracted) beam in the direction of the "tilt" in the 2D area detector. In this case along the "ordinate axis". The increase of the dimension along this direction of the original circular spot is the concept I'm espousing :-)
I intend to demonstrate this with the XRR and WAXS (using symmetric reflection) soon.
Stay tuned!
https://www.flickr.com/photos/85210325@N04/9311681113/in/album-72157632724094863/
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