Is is possible to form two separated sources of neutrons inside a reactor?

02 February 2016 1 5K Report

I think that inside a reactor one can obtain neutrons of different energies. My question is if it is possible to create two sources as in the picture?

Hans-G. Hildebrandt

Dear Sofia!

The fission neutrons have different energis like β-particles. The question is how to separate neutrons. I would say you can lead two neutron-beams through differently thick shilds of moderator. The two neutron beams will show two spectra of energy.

By the way the picture is idealised. To shield neutrons absolutely is nearly impossible.

Regards

Hans

Badges
Science topic

More Sofia D. Wechsler's questions See All

What exactly said J. von Neumann about the wave-function "collapse"?

I wasn't able to get von Neumann's book "Mathematical Foundations of Quantum Mechanics". But I saw many descriptions on his scheme of measurement, all of them saying the same things. What I was...

11 December 2018 5,740 21 View

Could this be a NO-GO of the quantum mechanics?

There are different proofs that the quantum nechanics (QM), more exactly the quantum formalism (that was NEVER contradicted by experiment), does not admit a substructure of particles following...

10 November 2018 3,762 97 View

I am interested in processes of absorption and coherent delayed re-emission. Can somebody indicate references?

Look at the following process: a photon wave-packet is split by a beam-splitter into the superposition ~ |a> + i|b>. In continuation, each one of the wave-packets |a> and |b>, passes through a...

07 August 2018 8,200 7 View

How sure we are that the photon is a particle? How big is a photon of radio frequency?

Consider a radio wave of wavelength λ=100m. If the electromagnetic waves are streams of photons, then a radio wave has to be a stream of photon. How big can be a photon of this wavelength? For a...

08 September 2017 5,406 4 View

What you think about weak measurements? Can we trust them?

Weak measurement are a relatively new trend in quantum experiment. They mean to determine the so-called Bohmian velocity, but in fact they measure the average linear momentum while disturbing very...

06 July 2017 5,538 15 View

What in fact did Sidney Coleman wanted to say in his lecture "Quantum mechanics in your face?

In his lecture https://www.youtube.com/watch?v=EtyNMlXN-sw Sidney Coleman, a famous physicist in the quantum theory and famous lecturer in the domain, tried to explain at a simple level the...

04 May 2017 4,460 86 View

A relativistic puzzle: can somebody solve it?

Assume two space-stations at rest with respect to one another. In one station works the experimenter Alice, and in the other, the experimenter Bob. Consider that at the time t0 by the clock of...

11 December 2016 6,485 18 View

What happens to the spin of a particle when passing from one frame of coordinates to another frame in relative movement?

Consider a frame of coordinates F, in movement with a velocity V with respect to the lab. Assume that we prepare in the lab a beam of spin 1 bosons, polarized along a direction Q which makes an...

09 October 2016 6,815 18 View

What happens with the linear momentum of two identical fermions identically polarized and sent to the same detector?

Assume two identical fermions, e.g. 3He, and polarized with the same spin projection, e.g. z-polarized. The fermions are sent from afar to the same detector - see attached picture. The dimensions...

09 October 2016 4,435 15 View

What is the "resonance of two photons of 750 GeV"?

Dear friends, I was informed of an article in the journal "Le Monde" commenting new experiments done with the Large Hadron Collider. As I am not a specialist in the matter of the Standard Model,...

08 September 2016 7,816 10 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,342 2 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,936 1 View

Stability of the Solar System: Insights from Einstein’s Equations ?

The stability of the Solar System is a complex subject that blends the classical framework of Newtonian mechanics with the modern insights provided by General Relativity (GR). Understanding this...

07 August 2024 2,569 1 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

How to use Density Functional Theory to calculate carrier mobilities of solid system?

Hello, everyone. I have tried to determine carrier motilities of some materials, by Density Functional Theory, using Quantum ESPRESSO. There are a few methods to do it, like a package called...

04 August 2024 8,892 1 View

Which test should be used to study association among demographic profile and awarness level?

i have to study the awareness and adoption level of cloud computing in a district of India. i also want to use association among demographic variables like gender, age, education, income etc and...

02 August 2024 2,420 3 View

Best mask design for metal deposition aiming build a Perovskite solar cell device?

What types of mask designs for metal deposition, to be used in a PVD system, are best suited for perovskite-based solar cells?

31 July 2024 4,835 3 View

How to use Desmond in HPC ?

Our department has recently acquired an HPC (High-Performance Computing) system, and I'm thrilled to take my molecular dynamics calculations to the next level using Desmond. I used to run my...

28 July 2024 6,553 1 View

How can I use DFT-D3 correction ( Siesta version 5.0.1)?

Dear Siesta Users, I installed Siesta 5.0.1 and I want to use Grimme's D3 correction. According to the 5.0.1 manual, I could use a few parameters to include the D3 correction in the...

27 July 2024 5,747 0 View

Can we eliminate the stress singularity at the tip of the crack by manipulating the elastic constants?

The aim of the research here is to prevent the propagation of the crack in the fabricated elastic medium with useful applications.

25 July 2024 9,976 3 View