Role of deposited energy density and impact ionization in the process of femtosecond laser-matter interaction with solids: scaling from visible to mid-IR wavelength

2019 ◽  
Author(s):  
Ekaterina Migal ◽  
Evgenii Mareev ◽  
Evgeniya Smetanina ◽  
Guillaume Duchateau ◽  
Fedor Potemkin
Keyword(s):  
Energy Density ◽  
Femtosecond Laser ◽  
Impact Ionization ◽  
Matter Interaction ◽  
Deposited Energy

scholarly journals Few Body Effects in the Electron and Positron Impact Ionization of Atoms

Atoms ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 33
Author(s):  
R.I. Campeanu ◽  
Colm T. Whelan
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Differential Cross ◽  
Impact Ionization ◽  
Inert Gas ◽  
Interference Effects ◽  
Positron Impact ◽  
Competing Interactions ◽  
Energy Sharing

Triple differential cross sections (TDCS) are presented for the electron and positron impact ionization of inert gas atoms in a range of energy sharing geometries where a number of significant few body effects compete to define the shape of the TDCS. Using both positrons and electrons as projectiles has opened up the possibility of performing complementary studies which could effectively isolate competing interactions that cannot be separately detected in an experiment with a single projectile. Results will be presented in kinematics where the electron impact ionization appears to be well understood and using the same kinematics positron cross sections will be presented. The kinematics are then varied in order to focus on the role of distortion, post collision interaction (pci), and interference effects.

The role of asymmetric excitation in self-organized nanostructure formation upon femtosecond laser ablation

2011 ◽  
Vol 104 (3) ◽  
pp. 969-973 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Sergej Varlamov ◽  
Michael Bestehorn
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanostructure Formation ◽  
Self Organized

Femtosecond laser pulse-train induced breakdown in fused silica: the role of seed electrons

2014 ◽  
Vol 47 (43) ◽  
pp. 435105 ◽  
Author(s):  
Kaihu Zhang ◽  
Lan Jiang ◽  
Xin Li ◽  
Xuesong Shi ◽  
Dong Yu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
Pulse Train ◽  
Fused Silica

Electron-impact ionization ofNe(2p)andAr(3p)at intermediate energies: Role of the postcollision interaction

2017 ◽  
Vol 96 (5) ◽  
Author(s):  
Xiaoqing Hu ◽  
Cong-Zhang Gao ◽  
Zhanbin Chen ◽  
Jianguo Wang ◽  
Yong Wu ◽  
...  
Keyword(s):  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Intermediate Energies

The role of the prepulse in cluster heating by a high-power femtosecond laser pulse

JETP Letters ◽  
2000 ◽  
Vol 72 (2) ◽  
pp. 38-41 ◽  
Author(s):  
T. Auguste ◽  
P. D’Oliveira ◽  
S. Hulin ◽  
P. Monot ◽  
J. Abdallah ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
High Power ◽  
High Power Femtosecond Laser

Role of nuclear tubule on the apoptosis of HeLa cells induced by femtosecond laser

2010 ◽  
Vol 96 (22) ◽  
pp. 223701 ◽  
Author(s):  
Hao He ◽  
Kam Tai Chan ◽  
Siu Kai Kong
Keyword(s):  
Femtosecond Laser ◽  
Hela Cells

Intrinsic stress and alloying effect in Mo/Ni superlattices: a comparison between ion beam sputtering and thermal evaporation

2005 ◽  
Vol 875 ◽  
Author(s):  
A. Debelle ◽  
G. Abadias ◽  
A. Michel ◽  
C. Jaouen ◽  
Ph. Guérin ◽  
...  
Keyword(s):  
Thermal Evaporation ◽  
Ion Irradiation ◽  
Ion Beam ◽  
Lattice Parameter ◽  
Growth Stress ◽  
Intrinsic Stress ◽  
Ion Beam Sputtering ◽  
Beam Sputtering ◽  
Deposited Energy

AbstractEpitaxial Mo(110)/Ni(111) superlattices were grown on (1120) single-crystal sapphiresubstrates, by ion beam sputtering (IBS) and thermal evaporation (TE), in order to investigate the role of deposited energy on the interfacial mixing process observed in Mo sublayers. To separate intermixing and growth stress contributions, a careful and detailed characterization of the stress/strain state of both samples was performed by X-ray Diffraction (XRD). Non-equal biaxial coherency stresses are observed in both samples. For the IBS specimen, an additional source of stress, of hydrostatic type, due to growth-induced point defects, is present, resulting in a triaxial stress state. The use of ion irradiation to achieve a controlled stress relaxation can provide additional data and, as shown elsewhere, allows to obtain the stress-free lattice parameter a0 solely linked to chemical effects. For the TE sample, a standard biaxial analysis gives a0. In both samples, the a0 value is lower than the bulk lattice parameter, due to the presence of intermixed Mo(Ni) layers. However, the intermixing is larger in the sputtered Mo sublayers than in the thermal evaporated ones, putting forward the prime role of energy and/or momentum transfer occurring during energetic bombardment.

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