2 research outputs found
Dependences of helium retention in tungsten and tantalum coatings irradiated with HeβΊ ions on fluence and temperature
The processes of helium accumulation and thermal desorption for tungsten and tantalum coatings deposited on a stainless-steel substrate with an intermediate titanium layer were studied at various temperatures of the samples when irradiated with HeβΊ ions to various fluences. The dependences of the concentration of captured helium and the form of the spectra of its thermal desorption into vacuum were found both on the fluence of HeβΊ ions and on the temperature of the samples upon irradiation. Possible mechanisms for the accumulation and thermal desorption of helium, as well as the formation of defects in the crystal lattice of the samples, are discussed.ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ ΠΏΡΠΎΡΠ΅ΡΠΈ Π½Π°ΠΊΠΎΠΏΠΈΡΠ΅Π½Π½Ρ Ρ ΡΠ΅ΡΠΌΠΎΠ΄Π΅ΡΠΎΡΠ±ΡΡΡ Π³Π΅Π»ΡΡ Π΄Π»Ρ Π²ΠΎΠ»ΡΡΡΠ°ΠΌΠΎΠ²ΠΎΠ³ΠΎ Ρ ΡΠ°Π½ΡΠ°Π»ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΈΡΡΡΠ², ΠΎΡΠ°Π΄ΠΆΠ΅Π½ΠΈΡ
Π½Π° ΠΏΡΠ΄ΠΊΠ»Π°Π΄ΠΊΡ Π· Π½Π΅ΡΠΆΠ°Π²ΡΡΡΠΎΡ ΡΡΠ°Π»Ρ Π· ΠΏΡΠΎΠΌΡΠΆΠ½ΠΈΠΌ ΡΠ°ΡΠΎΠΌ ΡΠΈΡΠ°Π½Ρ, Π· ΡΡΠ·Π½ΠΈΠΌΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ°ΠΌΠΈ Π·ΡΠ°Π·ΠΊΡΠ² ΠΏΡΠΈ ΠΎΠΏΡΠΎΠΌΡΠ½Π΅Π½Π½Ρ ΡΠΎΠ½Π°ΠΌΠΈ HeβΊ Π΄ΠΎ ΡΡΠ·Π½ΠΈΡ
Π΄ΠΎΠ·. ΠΠΈΡΠ²Π»Π΅Π½ΠΎ Π·Π°Π»Π΅ΠΆΠ½ΠΎΡΡΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΡ Π·Π°Ρ
ΠΎΠΏΠ»Π΅Π½ΠΎΠ³ΠΎ Π³Π΅Π»ΡΡ Ρ Π²ΠΈΠ΄ ΡΠΏΠ΅ΠΊΡΡΡΠ² ΠΉΠΎΠ³ΠΎ ΡΠ΅ΡΠΌΡΡΠ½ΠΎΡ Π΄Π΅ΡΠΎΡΠ±ΡΡΡ Π² Π²Π°ΠΊΡΡΠΌ ΡΠΊ Π²ΡΠ΄ Π΄ΠΎΠ·ΠΈ ΠΎΠΏΡΠΎΠΌΡΠ½Π΅Π½Π½Ρ ΡΠΎΠ½Π°ΠΌΠΈ HeβΊ, ΡΠ°ΠΊ Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠΈ Π·ΡΠ°Π·ΠΊΡΠ² ΠΏΡΠΈ ΠΎΠΏΡΠΎΠΌΡΠ½Π΅Π½Π½Ρ. ΠΠ°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ ΠΌΠΎΠΆΠ»ΠΈΠ²Ρ ΠΌΠ΅Ρ
Π°Π½ΡΠ·ΠΌΠΈ Π½Π°ΠΊΠΎΠΏΠΈΡΠ΅Π½Π½Ρ Ρ ΡΠ΅ΡΠΌΠΎΠ΄Π΅ΡΠΎΡΠ±ΡΡΡ Π³Π΅Π»ΡΡ, Π° ΡΠ°ΠΊΠΎΠΆ ΡΡΠ²ΠΎΡΠ΅Π½Π½Ρ Π΄Π΅ΡΠ΅ΠΊΡΡΠ² ΠΊΡΠΈΡΡΠ°Π»ΡΡΠ½ΠΎΡ ΡΠ΅ΡΡΡΠΊΠΈ Π·ΡΠ°Π·ΠΊΡΠ².ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΏΡΠΎΡΠ΅ΡΡΡ Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½ΠΈΡ ΠΈ ΡΠ΅ΡΠΌΠΎΠ΄Π΅ΡΠΎΡΠ±ΡΠΈΠΈ Π³Π΅Π»ΠΈΡ Π΄Π»Ρ Π²ΠΎΠ»ΡΡΡΠ°ΠΌΠΎΠ²ΠΎΠ³ΠΎ ΠΈ ΡΠ°Π½ΡΠ°Π»ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΠΉ, ΠΎΡΠ°ΠΆΠ΄Π΅Π½Π½ΡΡ
Π½Π° ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΡ ΠΈΠ· Π½Π΅ΡΠΆΠ°Π²Π΅ΡΡΠ΅ΠΉ ΡΡΠ°Π»ΠΈ Ρ ΠΏΡΠΎΠΌΠ΅ΠΆΡΡΠΎΡΠ½ΡΠΌ ΡΠ»ΠΎΠ΅ΠΌ ΡΠΈΡΠ°Π½Π°, Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ°ΠΌΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΠΏΡΠΈ ΠΎΠ±Π»ΡΡΠ΅Π½ΠΈΠΈ ΠΈΠΎΠ½Π°ΠΌΠΈ HeβΊ Π΄ΠΎ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
Π΄ΠΎΠ·. ΠΠ±Π½Π°ΡΡΠΆΠ΅Π½Ρ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ Π·Π°Ρ
Π²Π°ΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π³Π΅Π»ΠΈΡ ΠΈ Π²ΠΈΠ΄ ΡΠΏΠ΅ΠΊΡΡΠΎΠ² Π΅Π³ΠΎ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ Π΄Π΅ΡΠΎΡΠ±ΡΠΈΠΈ Π² Π²Π°ΠΊΡΡΠΌ ΠΊΠ°ΠΊ ΠΎΡ Π΄ΠΎΠ·Ρ ΠΎΠ±Π»ΡΡΠ΅Π½ΠΈΡ ΠΈΠΎΠ½Π°ΠΌΠΈ HeβΊ, ΡΠ°ΠΊ ΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΠΏΡΠΈ ΠΎΠ±Π»ΡΡΠ΅Π½ΠΈΠΈ. ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΠ΅ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΡ Π½Π°ΠΊΠΎΠΏΠ»Π΅Π½ΠΈΡ ΠΈ ΡΠ΅ΡΠΌΠΎΠ΄Π΅ΡΠΎΡΠ±ΡΠΈΠΈ Π³Π΅Π»ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ Π΄Π΅ΡΠ΅ΠΊΡΠΎΠ² ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅ΡΠ΅ΡΠΊΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ²
Investigation of the Processes of Retention and Release of Implanted Deuterium and Helium Ions for Tungsten and Tantalum Coatings
The analysis of main published results of studies of retention and migration of ion-implanted hydrogen isotopes and helium in tungsten and tantalum coatings, formation of radiation damages of the crystal lattice and their interaction with implanted gases, as well as the influence of helium and deuterium on various properties and surface morphology of coatings was carried out. The irradiation of samples was performed by beams of accelerated ions of hydrogen isotopes or He+, and in a plasma containing these ions, at various fluences and energies of incident ions, and at various temperatures of targets during implantation. Special attention was paid to the research results obtained at simultaneous irradiation of W both in bulk and in thin-film form. The used methods were electron microscopy, reemission mass spectrometry, thermal desorption spectrometry, X-ray photoelectron spectroscopy, X-ray diffraction, nuclear reaction analysis and Rutherford ion scattering