Recent content by DEvens

A year old post. Probably not going to be useful to respond, but in case. There are some projects to import CAD drawings to MCNP, but they seem to have gotten lost. The latest version of MCNP supposedly has some CAD ability but I cannot report directly. My last use of MCNP was 6.1. If you...

OK, a year old post with no answer. Probably it is too late to do anybody any good. PTRAC files can be text or binary depending on the options you choose. Check the manual entry for the card that produces the PTRAC file. The message you quote says "binary file" so probably you have chosen the...

I am not quite sure what you are asking. That may just be because I don't know what is "the saturation limit." Do you mean the saturation current in the photoelectric effect? My understanding of that is as follows. If you have a photoelectric system with a voltage across a gap, then it can...

There are several "antique" shops near my home. Mostly it's junk people have pulled from their attics and put up for sale. I like to cruise through looking for interesting things. One display had some interesting orange plates. I suspected they were just recent purchases from Wally World (to...

Recently I noticed the hood release lever under my dash was faulty. The cable was disconnected. Off to the mechanic, a large chain in Canada. I said as much to them and asked them to fix it, since it meant I was unable to open the hood. And please do the lube-and-oil. I also said, the car had...

All birds must fly. Ostrich is a bird. Ostrich cannot fly. Your only way out is to modify one. (Or more than one.) No jobs that let you stay in state, work on what you want, and require your level of education. Guess what you need to do. You might be surprised how interesting industry work...

Here is one sci fi forum. https://scifi.stackexchange.com/ Though on occasion I have had a less than optimal opinion of stackexchange. I have seen YASID posts there. I think the first place I saw it was on usenet, but that seems a tad old fashioned these days.

Oh, sorry. Yet another story ID. DaveC426913 you got it in one. Thanks! It's even the web site I originally read it on.

I am recalling a short-short, maybe from the 1990s, maybe from an author's blog, maybe Orson Scott Card. Not sure about those details. The basics: a time traveller pops into an author's study, gives a bunch of predictions, then pops a year later. The predictions all come true. In the year-later...

@Alex A is correct, I was referring to NJOY and makxs. And I'm going to guess he is also correct (again noting I have never done it) that you won't need them. At least, if you can accept the temperatures of the supplied files. In many cases that will be true. In some cases it will not.

I don't have the info you want. I know the cross section libray program that comes with MCNP can do some of what you describe but I have never used it, just looked over the shoulder of the guy at our office who used to be our big expert. I had meant to learn it after that guy retired. Then I...

Apologies for responding to the 2 year old post. When you use CardSharp what do you write? So, for example, I want to make an input with the usual bunch of cells and bunch of materials and bunch of data cards and such. Will I be writing Python code? Presumably then the Python code calls...

Somebody who thinks humans are an epidemic might benefit from taking mind altering drugs.

If you have no way of getting the number of particles started per second, then you cannot normalize to that basis. You can only report the results in terms of per-particle-started. You can still give a spectrum, but only normalized on the basis of per-particle-started. You can still do some...

SpaceX did 165 launches in 2025, including putting up 3000 Starlink satts. Including Starlink, SpaceX made a profit of about $8 billion last year. This is based on about 9 million subscribers to Starlink, and various launches for various other customers. The number of Starlink customers is...