Differences in shots with high and low neutron yield production in mega-ampere plasma focus discharges

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00382917" target="_blank" >RIV/68407700:21230/25:00382917 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0246587" target="_blank" >https://doi.org/10.1063/5.0246587</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0246587" target="_blank" >10.1063/5.0246587</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Differences in shots with high and low neutron yield production in mega-ampere plasma focus discharges

Popis výsledku v původním jazyce

The paper presents a comparison of shots with high and low neutron yield at deuterium filling. Shots with high neutron yield are characterized by a higher energy produced hard x rays and neutrons, a larger volume of plasmoid-like compact structure, and lower plasma density in the pinched column. The discrepancy was interpreted by different magnetic energies stored in the pinched column. The model of distribution of magnetic energy in a plasmoid assumes the existence of a poloidal component of magnetic field in the plasma, the formation of compact structures with closed poloidal and toroidal current components, filamentary distribution of the current, and development of MHD instabilities along the filaments. The model meets the characteristics of observed sources of fast deuterons, such as submillimeter dimensions, various directions of path with narrow directivity, and radial and azimuthal configuration of spots. The presented mechanism of acceleration of fast deuterons is based on the model of magnetic reconnection, in which part of the disappearing magnetic field induces a strong electric field sufficient for obtaining hundreds of keV energy.

Název v anglickém jazyce

Differences in shots with high and low neutron yield production in mega-ampere plasma focus discharges

Popis výsledku anglicky

The paper presents a comparison of shots with high and low neutron yield at deuterium filling. Shots with high neutron yield are characterized by a higher energy produced hard x rays and neutrons, a larger volume of plasmoid-like compact structure, and lower plasma density in the pinched column. The discrepancy was interpreted by different magnetic energies stored in the pinched column. The model of distribution of magnetic energy in a plasmoid assumes the existence of a poloidal component of magnetic field in the plasma, the formation of compact structures with closed poloidal and toroidal current components, filamentary distribution of the current, and development of MHD instabilities along the filaments. The model meets the characteristics of observed sources of fast deuterons, such as submillimeter dimensions, various directions of path with narrow directivity, and radial and azimuthal configuration of spots. The presented mechanism of acceleration of fast deuterons is based on the model of magnetic reconnection, in which part of the disappearing magnetic field induces a strong electric field sufficient for obtaining hundreds of keV energy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA23-04679S" target="_blank" >GA23-04679S: Studium fyziky z-pinčového plazmatu pomocí nových diagnostických metod využívající rychlé ionty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICS OF PLASMAS

ISSN

1070-664X

e-ISSN

1089-7674

Svazek periodika

32

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

001450452500002

EID výsledku v databázi Scopus

2-s2.0-105000516723