Results 21 to 30 of about 34,106 (228)

Cavitation pressure in liquid helium [PDF]

, 2001
Recent experiments have suggested that, at low enough temperature, the homogeneous nucleation of bubbles occurs in liquid helium near the calculated spinodal limit. This was done in pure superfluid helium 4 and in pure normal liquid helium 3. However, in
B. M. Abraham, B. M. Abraham, C. E. Campbell, D. M. Jezek, F. Caupin, F. Caupin, F. Caupin, F. Dalfovo, G. H. Bauer, G. W. Waters, H. J. Maris, H. J. Maris, H. Lambaré, J. A. Nissen, J. Boronat, J. C. Wheatley, J. Casulleras, J. Wilks, K. Dransfeld, Lord Rayleigh, M. A. Solis, M. Guilleumas, M. Guilleumas, M. Kollar, M. P. Bertinat, P. Roche, S. Balibar, S. Balibar, S. Balibar, S. N. Burmistrov, W. H. Press, X. Chavanne   +31 more
core   +3 more sources

Coalescence of helium bubbles in aluminum [PDF]

Journal of Nuclear Materials, 1974
Abstract The formation and coalescence of helium bubbles in aluminum with annealing at 550°C is examined experimentally using electrical resistivity and electron microscopy. Results for the kinetics of coalescence are compared with those obtained by computer simulation in order to test models based upon various mechanisms for bubble motion.
K.Y. Chen, J.R. Cost
openaire   +3 more sources

Microstructure Change, Nano-Hardness and Surface Modification of CN-G01 Beryllium Induced by Helium Ions

Metals, 2022
The helium effects in Chinese developed CN-G01 beryllium are important issues for its use in nuclear energy systems. In this work, the CN-G01 beryllium samples were irradiated with helium ions to fluences of 5.0 × 1016 ions/cm2 to 1.0 × 1018 ions/cm2 at ...
Minghuan Cui, Peng Jin, Tielong Shen, Yabin Zhu, Lilong Pang, Zhiguang Wang, Xiaofang Luo, Yongjin Feng, Baoping Gong   +8 more
doaj   +1 more source

Molecular dynamics simulations of cascade overlap with Void/Helium bubble

Nuclear Materials and Energy, 2022
When tungsten (W) is used as a plasma-facing material in fusion reactors, it will suffer irradiation from the high-energy neutron and high-flux low-energy helium (He) plasma, affording voids and He bubbles with varying helium-to-vacancy ratios (He/V ...
Jiechao Cui, Qing Hou, Min Li, Mingjie Qiu   +3 more
doaj   +1 more source

Sonoluminescence and collapse dynamics of multielectron bubbles in helium [PDF]

, 2004
Multielectron bubbles (MEBs) differ from gas-filled bubbles in that it is the Coulomb repulsion of a nanometer thin layer of electrons that forces the bubble open rather than the pressure of an enclosed gas.
A. P. Volodin, A. P. Volodin, D. Hammer, F. Takemura, I. F. Silvera, J. T. Devreese, J. Tempere, L. P. Gor’kov, L. P. Gor’kov, Lord Rayleigh, O. Baghdassarian, S. Rekhi, V. B. Shikin, V. B. Shikin   +13 more
core   +1 more source

Spectroscopy of Nonspherical Atomic Bubbles in Solid Helium [PDF]

The Journal of Physical Chemistry A, 2011
We analyze the effect of the host crystal symmetry on the optical spectra of the 6P(1/2)-6S(1/2) and 6P(3/2)-6S(1/2) transitions of atomic Cs in solid (4)He matrices. In particular, we address the deformation of the bubble structures formed by Cs in such quantum crystals.
Lebedev V, Moroshkin P, Weis A
openaire   +2 more sources

Semi-numeric simulations of helium reionization and the fluctuating radiation background [PDF]

, 2013
Recent He II Lyman-alpha forest observations from 2.0 2.7. These results point to a fluctuating He-ionizing background, which may be due to the end of helium reionization of this era.
Aguirre, Andrei Mesinger, Barkana, Bolton, Bolton, Bolton, Bond, Conroy, Cooray, Davies, Dixon, Fardal, Faucher-Giguère, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Furlanetto, Garzilli, Gleser, Gültekin, Hopkins, Hopkins, Hopkins, Hopkins, Hui, Jakobsen, Jenkins, Kelly, Keri L. Dixon, Kim, Kirkman, Madau, Maselli, Masters, McQuinn, Meiksin, Meiksin, Meiksin, Mesinger, Mesinger, Mesinger, Mesinger, O'Meara, Paschos, Petitjean, Press, Prochaska, Richards, Ross, Rudie, Schaye, Schaye, Schaye, Scott, Shen, Sheth, Shull, Shull, Sokasian, Songaila, Songaila, Steven R. Furlanetto, Syphers, Syphers, Syphers, Syphers, Telfer, Theuns, Theuns, Tittley, Trainor, White, Wolf, Worseck, Worseck, Worseck, Wyithe, Wyithe, Zahn, Zahn, Zaldarriaga, Zel'Dovich, Zuo   +86 more
core   +2 more sources

Evolution of Helium with Temperature in Neutron-Irradiated 10B-Doped Aluminum by Small-Angle X-Ray Scattering

Advances in Condensed Matter Physics, 2014
Helium status is the primary effect of material properties under radiation. 10B-doped aluminum samples were prepared via arc melting technique and rapidly cooled with liquid nitrogen to increase the boron concentration during the formation of compounds ...
Chaoqiang Huang, Guanyun Yan, Qiang Tian, Guangai Sun, Bo Chen, Liusi Sheng, Yaoguang Liu, Xinggui Long, Xiao Liu, Luhui Han, Zhonghua Wu   +10 more
doaj   +1 more source

Numerical Investigation of Helium Bubble Rising Behavior in Cross-Type Channel

Frontiers in Energy Research, 2020
In a certain nuclear reactor, the coolant channel is a cross-type channel. There is little research about bubble rising behavior in this kind of channel, but the neutron detection would be affected by the bubbles.
Chunjie Zeng, Chunjie Zeng, Baoxin Yuan, Zhaoming Meng, Xin Zhang, Herui Jiang, Defang Mu, Ruihao Yan   +7 more
doaj   +1 more source

The solubility of helium in lead–lithium eutectic alloy

Nuclear Materials and Energy, 2022
The helium production rates in liquid metals (Pb-Li eutectic alloy, LLE and others) Blanket Breeders (BB) are nearly mol-to-mol linked to tritium and intimately associated with the compulsory requirement of high tritium self-sufficiency of next fusion ...
L. Sedano, G.A. Esteban, M. Cavaro, E. Iraola, A. Abdulrahman, L. Batet, M. Guasch   +6 more
doaj   +1 more source