Ion Irradiation Smoothing and Film Bonding for Laser Mirrors

ABSTRACTIrradiation with high energy heavy ion beams has been investigated as a technique for improving the quality of highly reflecting metallic surfaces to be used as laser mirrors. Properties such as reflectivity, corrosion resistance, film bonding, and threshold to laser surface damage have been examined. Modifications of composition and microstructure of the material associated with the heavy ion irradiation have been measured with RBS, TEM, SEM, Auger, and ESCA. Reflectivity and extinction coefficient measurements were made using ellipsometry techniques. Observations indicate that keV heavy ion irradiations in the fluence range of 1015 to 1016 cm−2 produce significant surface smoothing. Additionally, MeV implants of heavy ions into films of Cu, Ag, Au and Al deposited on molybdenum substrates resulted in improvements to both tarnish resistance and structural bonding integrity.

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A poly(vinylidene fluoride-co-hexafluoro propylene) nanohybrid membrane using swift heavy ion irradiation for fuel cell applications

Journal of Materials Chemistry A ◽

10.1039/c5ta01398d ◽

2015 ◽

Vol 3 (19) ◽

pp. 10413-10424 ◽

Cited By ~ 17

Author(s):

Karun Kumar Jana ◽

Amit K. Thakur ◽

Vinod K. Shahi ◽

Devesh K. Avasthi ◽

Dipak Rana ◽

...

Keyword(s):

Heavy Ions ◽

Vinylidene Fluoride ◽

Ion Irradiation ◽

Heavy Ion ◽

High Energy ◽

Heavy Ion Irradiation ◽

Swift Heavy Ion ◽

Thin Polymer ◽

Poly Vinylidene Fluoride ◽

Amorphous Zone

Through channels in thin polymer/nanohybrid films have been made by irradiating with high energy swift heavy ions (SHI) followed by selective chemical etching of the amorphous zone in the latent track created by SHI during the bombardment.

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Surface modification by high-energy heavy-ion irradiation in various crystalline ZnO facets

Physical Chemistry Chemical Physics ◽

10.1039/d1cp02388h ◽

2021 ◽

Vol 23 (39) ◽

pp. 22673-22684

Author(s):

Adéla Jagerová ◽

Romana Mikšová ◽

Oleksander Romanenko ◽

Iva Plutnarova ◽

Zdeněk Sofer ◽

...

Keyword(s):

Optical Properties ◽

Surface Modification ◽

Ion Irradiation ◽

Heavy Ion ◽

High Energy ◽

Heavy Ion Irradiation ◽

Surface Nanostructures ◽

The Creation

The high-energy ion irradiation induces the creation of ZnO surface nanostructures affecting optical properties, which may be promising for photocatalysis and optoelectronics.

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Interaction between Al and atomic layer deposited (ALD) ZrN under high-energy heavy ion irradiation

Acta Materialia ◽

10.1016/j.actamat.2018.10.031 ◽

2019 ◽

Vol 164 ◽

pp. 788-798 ◽

Cited By ~ 2

Author(s):

Sumit Bhattacharya ◽

Xiang Liu ◽

Yinbin Miao ◽

Kun Mo ◽

Zhi-Gang Mei ◽

...

Keyword(s):

Ion Irradiation ◽

Atomic Layer ◽

Heavy Ion ◽

High Energy ◽

Heavy Ion Irradiation

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Heavy-Ion Irradiation Induced Diamond Formation in Carbonaceous Materials

MRS Proceedings ◽

10.1557/proc-540-189 ◽

1998 ◽

Vol 540 ◽

Cited By ~ 4

Author(s):

T. L. Daulton ◽

R. S. Lewis ◽

L. E. Rehn ◽

M. A. Kirk

Keyword(s):

Ambient Temperature ◽

Ion Irradiation ◽

Metastable Phase ◽

Radioactive Decay ◽

Heavy Ion ◽

High Energy ◽

High Energy Particle ◽

Acid Dissolution ◽

Heavy Ion Irradiation ◽

Particle Tracks

AbstractMetastable phase formation under highly non-equilibrium thermodynamic conditions within high-energy particle tracks are investigated. In particular, the possible formation of diamond by heavy-ion irradiation of graphite at ambient temperature is examined. This work was motivated, in part, by an earlier study which discovered nanometer-grain polycrystalline diamond aggregates of submicron-size in uranium-rich carbonaceous mineral assemblages of Precambrian age. It was proposed that these diamonds were formed within the particle tracks produced in the carbonaceous minerals by the radioactive decay of uranium. To test the hypothesis that nanodiamonds can form by ion irradiation, fine-grain polycrystalline graphite sheets were irradiated with 400 MeV Kr ions to low fluence (6 × 1012 ions-cm−2). The ion-irradiated (and unirradiated control) graphite were then subjected to acid dissolution treatments to remove the graphite and isolate any diamonds that were produced. These acid residues were characterized by transmission electron microscopy. The acid residue of the ion-irradiated graphite was found to contain nanodiamonds (at several ppm of bulk), demonstrating that ion irradiation of graphite at ambient temperature can produce diamond.

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