How can we calculate the delayed neutron flux in an MCNP kcode simulation?

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Could you please suggest to me research in which a relation between the shear wave velocity and the degree of saturation for stone was discussed?

Hi all, I am looking for a graph or a relation that relates the degree of saturation and the shear wave velocity for the marlstone. Looking forward to your suggestions Best Regards

24 February 2021 9,690 1 View

Do I need to ask permission to use pictures for my questionnaire?

I would like to use some photo from a government website for my questionnaire. But, different photo is from the different owner. So, should I just get permission from that government body or still...

23 February 2021 1,631 3 View

How to model linear-elastic large deformation of 1D Uniaxial stress in ABAQUS?

Dear researchers, how to model linear-elastic large deformation of 1D Uniaxial stress in ABAQUS? How does the abaqus distinguish between the 1d uniaxial stress and strain analysis? Thanks in advance.

20 December 2020 370 2 View

Is reconstitution solvents (etc: acetone, methanol) in the last step of extraction important in securing the compounds peak in the HPLC or LC-MS/MS?

I have used different reconstitution solvents in my sample extractions for an example, I used methanol as my reconstitution solvents in the water and sediment extraction sample whereas, I used...

25 November 2020 6,842 7 View

How to formulate or simulate FSI and 6DOF together?

hi every one I want to know, is there any way to formulate FSI and 6 DOF or simulate them together in CFD Softwares? for example FSI of a ship with 6 DOF in regular waves or irregular waves? thanks

01 November 2020 6,197 3 View

No title

Hello there I'm a Ph.D. student in clinical psychology and need to learn R software. I have enough knowledge of SPSS and AMOS. Are these skills enough for starting R software learning for...

23 October 2020 8,220 5 View

How is solubility of CO2 or air in organic solvents such as xylene or cyclohexane?

For some reason, I need to inject a dispersion of an organic solvent and organoclay into a block of soil sample. the organic solvent probably is xylene.

29 September 2020 6,348 4 View

How to decide sample size for tourists based on available tourists arrival data in my case study in Gunung Mulu National Park?

My study will be conducted in Gunung Mulu National Park, Sarawak, Malaysia. The target respondents are local community and tourists. For the local community, there is no problem. But, I am still...

23 September 2020 1,421 1 View

Are there any experimental data on the graphitization effect of neutronics in HTGR?

I'm doing a neutronic simulation of a high-burnup, high-temperature graphite-moderated reactor. Is neutronics significantly affected if graphitization is neglected/considered? Note that I have...

22 September 2020 7,780 3 View

How to Measure the mass of an evaporating fuel droplet?

Dear Scholars, As a part of my research, I am interested to measure the mass evolution (mass lost) of a evaporating fuel droplet during its combustion/evaporation. In our experiment, a fuel...

07 September 2020 1,475 5 View

How to solve the fatal error "the entire source was rejected" in MCNP?

Simple geometry was made having concentric cylinders bounded by a square region. The geometry has a reflective boundary. The source was defined at one point in the boundary and when it had been...

17 February 2021 4,364 3 View

Head phantom by MCNP?

Can anyone give an advice about what is the best method to simulate a head phantom by MCNP? I mean, is there any reference to use?

01 February 2021 7,304 2 View

What form of data analysis should I use for my pilot study?

I am currently conducting my final year dissertation which is looking at the efficacy of common police lineup practices. However, before I launch my study, I have put out a pilot study which is...

08 January 2021 4,376 4 View

If opposite charges attract each other, then why do neutrons and protons bind with each other, whereas electrons surround them in an atom?

According to science, like charges repel each other and opposite charges attract each other. But if you observe the structure of an atom, neutrons(neutral), and protons(positive) bind tightly with...

23 November 2020 8,881 7 View

How to calculate Dose rate \dot {D} without source activity with dose tally * F8?

I am using MCNP5 to calculate the dose in a Brachytherapy source with dose counter * F8, but I do not have the current activity of the source. How can I calculate the dose rate for this? Thanks...

06 November 2020 4,194 3 View

How to obtain lift coeficient of a cylinder using ANSYS Fluent?

I am trying to obtain the lift coefficient plot for a circular cylinder at Re = 200 (density = 100, velocity = 20 and viscosity = 1 kg/ms). I am using ANSYS Fluent to simulate a transient flow...

21 October 2020 2,498 4 View

Can protons, ions and neutrons be used for SEM imaging rather than electron beam?

Generally it is known that SEM is based on the principle of interaction of electron beam with matter. Proton and ion beam can be used instead of electron beam? How their interaction will be...

27 September 2020 4,432 9 View

Symmetrical form of Maxwell's equation explains Light propagation in empty space and Quantum Mechanical uncertainty at the same time?

In physics, normally a critical information solves many seemingly unrelated problems at the same time. I think this is the case with the information that neutrinos are magnetic monopoles of...

11 September 2020 7,840 22 View

Is there direct experimental confirmation of the existence of quarks?

Quarks have emerged from the evidence that protons and neutrons are composite particles. This has led to the formulation of the QCD and the "asymptotic freedom" hypothesis. This theoretical...

16 March 2020 5,916 9 View

Does anyone have a proton therapy treatment unit simulated in Geant4 or MCNP?

Does anyone have a fully modeled proton therapy treatment unit available? It can be in either Geant4 (G4/Topas/Gate) or MCNP.

14 March 2020 6,540 3 View

Subhrojit Bagchi

Although I am not sure but you can always use TOTNU and TOTNU NO card to find out the total neutron contribution and prompt neutron contribution respectively.

Mohamad Hairie Rabir

Subhrojit Bagchi Yes, I had the same thought. I wish we could tally the 'delayed' effect of the delayed neutron using time bins.

Sergei Beliavskii

There is a software monte carlo Universal by Kurchatov institute. It has "delayed neutron" calculation as an option. It shows delayed neutron fraction and something else that I have not checked yet