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Alex A's latest activity
A
Alex A
reacted to
HEU_LL's post
in the thread
MCNP6 BURN Card Issue: Zero Burnup for Material in Fuel Assembly
with
Like
.
I'm very sorry to disturb everyone. The problem has been solved. In fact, it was due to carelessness that I wrote the wrong number of...
Yesterday, 9:02 AM
A
Alex A
replied to the thread
MCNP6 BURN Card Issue: Zero Burnup for Material in Fuel Assembly
.
I'm assuming since you get answers both materials are on your MAT card. Can you show us what isn't working by renaming it to a .txt and...
Monday, 5:37 AM
A
Alex A
reacted to
Astronuc's post
in the thread
Interesting Documentary on the Dounreay Breeder Reactor
with
Informative
.
The video in the OP offers a fair assessment. There was a level of negligence involved. Reprocessing nuclear fuel is complicated...
Aug 26, 2025
A
Alex A
reacted to
HEU_LL's post
in the thread
Beginner Seeking Help: MCNP6 Burnup Example (OECD-NEA Benchmark)
with
Like
.
Thank you very much for your enthusiasm and patient guidance. I deeply admire your excellent professional knowledge. With the two...
Aug 26, 2025
A
Alex A
replied to the thread
Beginner Seeking Help: MCNP6 Burnup Example (OECD-NEA Benchmark)
.
The automatic search can produce isotopes that are not tabulated. There are multiple ways to deal with that, one is to use an OMIT...
Aug 25, 2025
A
Alex A
replied to the thread
Beginner Seeking Help: MCNP6 Burnup Example (OECD-NEA Benchmark)
.
Adding a token quantity of Am and Pu isotopes to the material being burned seems to work (0 might work too?). A listing in a material...
Aug 22, 2025
A
Alex A
replied to the thread
Beginner Seeking Help: MCNP6 Burnup Example (OECD-NEA Benchmark)
.
Welcome to PhysicsForums @HEU_LL, I don't really know burnup, but the geometry is fairly simple. Try writing one for a single cell...
Aug 20, 2025
A
Alex A
reacted to
berkeman's post
in the thread
Fusion research idea involving more pressure
with
Informative
.
Presumably you mean Magnetic Confinement reactors (Tokamaks and similar), and not Inertial Confinement Fusion (ICF) reactors. Magnetic...
Aug 20, 2025
A
Alex A
reacted to
Astronuc's post
in the thread
eVinci MCNP input file
with
Informative
.
Such details would be proprietary to Westinghouse, and they are unlikely to place such information in the public domain. A...
Aug 17, 2025
A
Alex A
replied to the thread
Help Needed: Discrepancy in 2D Monte Carlo Neutron Transport Simulation
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The high level program flow seems a bit broken. Interaction in cladding prints multiple times (and this is actually interaction in...
Aug 8, 2025
A
Alex A
reacted to
Astronuc's post
in the thread
Is nuclear fusion without radioactive waste possible?
with
Informative
.
Not as yet. This would require an aneutronic fusion reaction, i.e., a fusion reaction that does not produce neutrons. One reaction of...
Jul 31, 2025
A
Alex A
reacted to
gmax137's post
in the thread
How effective is nuclear propulsion?
with
Like
.
What have you looked at so far? Have you seen this...
Jul 31, 2025
A
Alex A
replied to the thread
Shielded and unshielded dose from a Co-60 source are the same?
.
Hello @Joao Pedro, Welcome to PhysicsForums. If you run mcnp with options ip it will plot the geometry. Dotted lines tend to indicate...
Jul 14, 2025
A
Alex A
replied to the thread
MCNP: Is this a valid way to define "two sources with different sizes"?
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Hi @BaoNgoc, Welcome to PhysicsForums. I'm a bit confused by L=d10, but I'm fairly sure the answer is no. Random numbers picked...
Jul 1, 2025
A
Alex A
reacted to
Astronuc's post
in the thread
Atomic displacements, replacements, and radiation damage of structural materials
with
Informative
.
An important aspect of nuclear materials, and components of which they are made, is their ability to perform over the design life. The...
Jun 27, 2025
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