Results 21 to 30 of about 94,410 (289)

Quantitatively measuring the influence of helium in plasma-exposed tungsten

Nuclear Materials and Energy, 2017
Tungsten samples are exposed to 3He plasma to quantify their helium retention behavior. The retention saturates quickly with helium fluence and increases only slightly from 4.3×1019He/m2 at 773K, to 7.5×1019He/m2 at 973K.
R.P. Doerner, M.J. Baldwin, M. Simmonds, J.H. Yu, L. Buzi, T. Schwarz-Selinger   +5 more
doaj   +1 more source

Interaction of 1/2〈111〉 interstitial dislocation loop with hydrogen and helium in tungsten: molecular dynamics simulation

Materials Research Express, 2023
The interaction of hydrogen and helium atoms with 1/2 〈111〉 interstitial dislocation loop in tungsten is investigated by molecular dynamics simulation. The binding energies of hydrogen and helium atoms around dislocation loop are calculated by molecular ...
Bai-Chuan Xu, Xiao-Chun Li, Jinlong Wang, Ya-Wen Li, Xin-Dong Pan, Yi-Ming Lyu, Hai-Shan Zhou, Guang-Nan Luo   +7 more
doaj   +1 more source

Amphibole: A major carrier of helium isotopes in crustal rocks [PDF]

, 2016
The first evidence for a specific role of amphiboles in He isotope balance of crustal rocks was presented in early contributions by Gerling et al. (1971, 1976).
A.B. Verchovsky, Andrews, Ashkinadze, Baxter, Baxter, Baxter, Begemann, Belkov, Damon, Farley, Gaber, Gannibal, Gerling, Gerling, Gerling, Gerling, Gorshkov, Graham, Helz, Hilton, I.L. Kamensky, I.N. Tolstikhin, Jackson, Jackson, Jackson, Kalita, Kamensky, Kamensky, Kelley, Kendrick, Komarov, Komarov, Kremenetsky, Lee, Lee, Lee, Lee, Lippolt, M.A. Gannibal, Mamyrin, Martel, Matsumoto, Morozova, Morrison, Petrov, Pujol, S.V. Tarakanov, Scarsi, Shelby, Sherlock, Staudacher, Tolstikhin, Tolstikhin, Tolstikhin, Tolstikhin, Tolstikhin, Tolstikhin, Trull, V.I. Skiba, V.R. Vetrin, Verchovsky, Vetrin, Vetrin, Wartho, Wright, Wright   +65 more
core   +1 more source

Helium-implantation-induced lattice strains and defects in tungsten probed by X-ray micro-diffraction

Materials & Design, 2018
Tungsten is the main candidate material for plasma-facing armour components in future fusion reactors. Bombardment with energetic fusion neutrons causes collision cascade damage and defect formation.
S. Das, W. Liu, R. Xu, F. Hofmann
doaj   +1 more source

An evaluation of weld metal nitrogen retention and properties in 316NL austenitic stainless steel [PDF]

, 2011
A series of tests were conducted using varying levels of nitrogen and helium in a conventional argon shielding gas when welding 316LN austenitic stainless steel. The outcome was that a 15 per cent nitrogen addition to the argon shielding gas had the most
Baker, Thomas, Galloway, Alexander, McPherson, Norman   +2 more
core   +1 more source

Type Ia Supernovae: An Examination of Potential Progenitors and the Redshift Distribution [PDF]

, 1997
We examine the possibility that supernovae type Ia (SN Ia) are produced by white dwarfs accreting from Roche-lobe filling evolved companions, under the assumption that a strong optically thick stellar wind from accretor is able to stabilize the mass ...
Canal R., Cappellaro E., de Kool M., Eggleton P. P., Kahabka P., L. Yungelson, Li X.-D., M. Livio, Madau P., Mochkovich R., Paczynski B., Pastetter L., Refsdal S., Refsdal S., Shaefer B. E., Soberman G. E., Uus U., van den Heuvel E. P. J., Yungelson L.   +18 more
core   +3 more sources

Deuterium retention behavior in simultaneously He+–D2+ implanted tungsten

Nuclear Materials and Energy, 2018
Poly-crystalline tungsten (W) samples were simultaneously irradiated with Helium (He) and Deuterium (D) ions using the triple-ion implantation device. He effect on D retention and transportation was studied using different combination of ion energies and
Qilai Zhou, Keisuke Azuma, Akihiro Togari, Miyuki Yajima, Masayuki Tokitani, Suguru Masuzaki, Naoaki Yoshida, Masanori Hara, Yuji Hatano, Yasuhisa Oya   +9 more
doaj   +1 more source

Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions [PDF]

, 2015
We have investigated the effects of helium ion irradiation energy and sample temperature on the performance of grain boundaries as helium sinks in ultrafine grained and nanocrystalline tungsten.
A. Hassanein, Allain, Amano, Bai, Baldwin, Balluffi, Caspers, Dausinger, Debelle, Delafond, Efe, El-Atwani, El-Atwani, Eleveld, Evans, Federici, Fichtner, Finnis, G. Greaves, Hattar, Hattar, Iwakiri, J.A. Hinks, Jung, K. Hattar, Kajita, Kajita, Lee, Lipschultz, Minyou, Niwase, O. El-Atwani, Olieviero, Oliviero, S.S. Harilal, Samaras, Scott, Sefta, Shen, Shu, Singh, Singh, Sun, Trinkaus, Ullmaier, Wagner, Wei, Wei, Ziegler   +48 more
core   +1 more source

Microstructure evolution and effect on deuterium retention in oxide dispersion strengthened tungsten during He+ irradiation

Nuclear Engineering and Technology, 2020
Oxide dispersion-strengthened materials W-1wt%Pr2O3 and W-1wt%La2O3 were synthesized by wet chemical method and spark plasma sintering. The field emission scanning electron microscopy (FE-SEM) analysis, XRD and Vickers microhardness measurements were ...
Xiao-Yu Ding, Qiu Xu, Xiao-yong Zhu, Lai-Ma Luo, Jian-Jun Huang, Bin Yu, Xiang Gao, Jian-Gang Li, Yu-Cheng Wu   +8 more
doaj   +1 more source

Helium exhaust experiments on JET with Type I ELMs in H-mode and with type III ELMs in ITB discharges [PDF]

, 1976
An analysis of helium exhaust experiments on JET in the MkII-GB divertor configuration is presented. Helium is pumped by applying an argon frost layer on the divertor cryo pump.
Akers, R. J., Alladio, F., Appel, L. C., Axon, K. B., Ben Ayed, N., Boerner, P., Buttery, R. J., Carolan, P. G., Challis, C. D., Chapman, I. T., Ciric, D., Connor, J. W., Conway, N. J., Counsell, G. F., Cowley, S., Cox, M., Coyler, G., Cunningham, G., Darke, A., deBock, M., Dendy, R. O., deTemmerman, G., Dnestrovskij, A. Yu, Dnestrovskij, Yu. N., Dowling, J., Dudson, B., Dunai, D., Dunstan, M., Field, A. R., Foster, A., Garzotti, L., Gibson, K., Gryaznevich, M. P., Guttenfelder, W., Harrison, J., HASH(0x555de1024240), HASH(0x555de132a640), Hawkes, N. C., Helander, P., Hender, T. C., Hnat, B., Hole, M. J., Howell, D. F., Hua, M. Duc, Hubbard, A., Istenic, M., Joiner, N., Keeling, D., Kirk, A., Koslowski, H. R., Liang, Y., Lilley, M. K., Lisgo, S., Lloyd, B., Maddison, G. P., Maingi, R., Mancuso, A., Manhood, S. J., Martin, R., McArdle, G. J., McCone, J., Meyer, H., Michael, C., Micozzi, P., Morgan, T., Morris, A. W., Muir, D. G., Nardon, E., Naylor, G., O'Brien, M. R., O'Gorman, T., Patel, A., Pinches, Simon David, Preinhaelter, J., Price, M. N., Rachlew, E., Reiter, D., Roach, C. M., Rozhansky, V., Saarelma, S., Saveliev, A., Scannell, R., Sharapov, S. E. (Sergei E.), Shevchenko, V., Shibaev, S., Smith, H., Staebler, G. E., Stork, D., Storrs, J., Sykes, A., Tallents, S., Tamain, P., Taylor, D., Temple, D., Thomas-Davies, N., Thornton, A., Thyagaraja, A., Turnyanskiy, M. R., Urban, J., Valovic, M., Vann, R. G. L., Volpe, F., Voss, G., Walsh, M. J., Warder, S. E. V., Watkins, R., Wilson, H. R., Windridge, M., Wisse, M., Zabolotski, A., Zoletnik, S., Zolotukhin, O.   +111 more
core   +16 more sources