scholarly journals TRAPP, A COMPUTER PROGRAM FOR THE TRANSPORT OF ALPHA PARTICLES AND PROTONS WITH ALL NUCLEAR-REACTION PRODUCTS NEGLECTED.

1972 ◽  
Author(s):  
J. Barish ◽  
R.T. Santoro ◽  
F.S. Alsmiller ◽  
R.G. Jr. Alsmiller
Keyword(s):  
Computer Program ◽  
Nuclear Reaction ◽  
Alpha Particles ◽  
Reaction Products

scholarly journals Optical Radiation from the Sputtered Species under Excitation of Ternary Mixtures of Noble Gases by the 6Li(n,α)3H Nuclear Reaction Products

2021 ◽  
Vol 23 (2) ◽  
pp. 95
Author(s):  
K. Samarkhanov ◽  
M. Khasenov ◽  
E. Batyrbekov ◽  
Yu. Gordienko ◽  
Yu. Baklanova ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Nuclear Reaction ◽  
Alkali Metals ◽  
Nuclear Reactor ◽  
Noble Gases ◽  
Noble Gas ◽  
Alpha Particles ◽  
Ternary Mixtures ◽  
Reaction Products ◽  
Energy Excitation

The present paper examines the luminescence of ternary Ar-Kr-Xe and Ne-Ar-Kr mixtures of noble gases in the spectral range from 300 to 970 nm, excited by the 6Li(n,α)3H nuclear reaction products in the core of a nuclear reactor. A thin layer of lithium applied on the walls of the experimental device, stabilized in the matrix of the capillary-porous structure, serves as a source of gas excitation. During in-pile tests, conducted at the IVG.1M research reactor, thermal neutrons interact via the 6Li(n,α)3H reaction, and the emergent alpha particles with a kinetic energy of 2.05 MeV and tritium ions with a kinetic energy of 2.73 MeV excite gaseous medium. The study was carried out in a wide temperature range. The temperature dependence of the intensity of the emission of the atoms of noble gases and alkali metals, heteronuclear ionic molecules of noble gases were studied. The obtained values of the activation energy of the emission process 1.58 eV for lithium and 0.72 eV for potassium agree well with the known values of evaporation energy. Excitation of alkali metals atoms occurs consequently of the Penning process of alkali metals atoms on noble gas atoms in the 1s-states and further ion-molecular reactions.

Lattice Location of Boron and Hafnium Dopants in an Aluminide by Use of Ion Channeling/Nuclear Reaactnio Analyses

1986 ◽  
Vol 81 ◽  
Author(s):  
H. G. Bohn ◽  
J.M. Williams ◽  
J.H. Barrett ◽  
C.T. Liu
Keyword(s):  
Single Crystal ◽  
Nuclear Reaction ◽  
Nickel Aluminide ◽  
Host Lattice ◽  
Alpha Particles ◽  
Alloy Single Crystal ◽  
Lattice Location ◽  
Reaction Products ◽  
Ion Channeling ◽  
Proton Interaction

AbstractExperiments have made use of Rutherford backscattering (RBS), ion channeling techniques and analyses for nuclear reaction products to study lattice location of B and Hf dopantsin an ordered nickel aluminide. Studies were of an alloy single crystal of composition Ni76A123Hf1 with about 0.1 at. % of B added. Analysis for B was accomplished by detection of alpha particles resulting from the reaction 11B(p,αi)8 Be, in ion channeling experiments in which RBS from the Ni constituent was used to control channeling in the host lattice. Yield of the reaction product from proton interaction with B decreased relative to random for channeling in a <100> direction, but increased relative to random for channeling in a <110= direction. It was concluded that B occupies primarily octahedral interstitial sites. RBS/channeling half-angles for Hf in a <100> direction are somewhat smaller than those for Ni, but nevertheless considerably larger than half-angles expected for Al. It is concluded that the majority of Hf atoms are on the Ni sublattice.

scholarly journals Emission of Noble Gases Binary Mixtures under Excitation by the Products of the 6Li (n, α)3 H Nuclear Reaction

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Kuanysh Samarkhanov ◽  
Mendykhan Khasenov ◽  
Erlan Batyrbekov ◽  
Inesh Kenzhina ◽  
Yerzhan Sapatayev ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Nuclear Energy ◽  
Alkali Metals ◽  
Nuclear Reactor ◽  
Noble Gases ◽  
Noble Gas ◽  
Direct Conversion ◽  
Reaction Products ◽  
Gas Molecules ◽  
Sodium And Potassium

The luminescence of Kr-Xe, Ar-Kr, and Ar-Xe mixtures was studied in the spectral range 300–970 nm when excited by 6Li (n, α)3 H nuclear reaction products in the core of a nuclear reactor. Lithium was deposited on walls of experimental cell in the form of a capillary-porous structure, which made it possible to measure up to a temperature of 730 K. The temperature dependence of the radiation intensity of noble gas atoms, alkali metals, and heteronuclear ionic noble gas molecules was studied. Also, as in the case of single-component gases, the appearance of lithium lines and impurities of sodium and potassium is associated with vaporization during the release of nuclear reaction products from the lithium layer. The excitation of lithium atoms occurs mainly as a result of the Penning process of lithium atoms on noble gas atoms in the 1s states and subsequent ion-molecular reactions. Simultaneous radiation at transitions of atoms of noble gases and lithium, heteronuclear ion molecules of noble gases allows us to increase the efficiency of direct conversion of nuclear energy into light.

scholarly journals Collecting nuclear reaction products by adsorption from a gas flow in a slit channel

1995 ◽  
Vol 365 (1) ◽  
pp. 208-213
Author(s):  
Yu.P. Kharitonov ◽  
A.N. Golovchenko ◽  
V.L. Mikheev ◽  
V.A. Ponomarenko ◽  
S.N. Timokhin ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Gas Flow ◽  
Reaction Products ◽  
Slit Channel
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