Correcting for film reciprocity failure, X-Ray Film results?

[Tin Can]

I have not noticed anything here concerning X-Ray film reciprocity failure, and I post this here as techniques should be universal.

I am new at this and never used it, but last night I shot four 8X10 Ektascan X-Ray of Plastica using a single panel 3400K LED 'video' light at full power, which is bright. At 5 feet with gold reflector opposite my meter read, at nose ISO 80 1/8 f8.0. I needed a 2.3 bellows factor and shot the 4 images below. I didn't mark for order of exposure. Oops.

Exposure times and f stops are not in order.

2 seconds f9
8 seconds f16
32 seconds f32
8 minutes f90

All images as scanned in Vuescan, no corrections or PS except re-size for LFPF 750 pixel posterity.

I realize my technique is poor and found the below link.

http://home.earthlink.net/~kitathome...eciprocity.htm


#1 Has anybody made reciprocity tables for X-Ray? Where are they?
#2 Any advice on how to do this with better techniques without going insane. Oops too late there.