Amorphization and graphitization of single-crystal diamond — A transmission electron microscopy study

Hickey, D P; Jones, K. S.; Elliman, R. G.

doi:10.1016/j.diamond.2009.08.012

Cited by 89 publications

(59 citation statements)

References 20 publications

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“…All the above imperfections of the diamond crystal will cause the variation of the lattice constant and/or the change of orientation of the lattice plane. These changes can be measured by experimental methods such as the high resolution X‐ray topography and rocking curve measurements 9–14, Raman spectroscopy 15, TEM 16, polarized light microscopy 17, etc. The coherent bremsstrahlung process can also be used to check the crystal quality; however, it needs a dedicated high energy electron beam line.…”

Section: Introductionmentioning

confidence: 99%

High resolution X‐ray diffraction study of single crystal diamond radiators

Yang

Livingston

Jones

et al. 2012

Physica Status Solidi (a)

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High quality single crystal diamond is widely used for generating highly polarized high energy photon beams in the photonuclear physics study. The quality of the diamond crystal has a vital effect on the polarization of the photon beam which should be as high as possible as required by the experiments at Jefferson Lab, MAX_lab and MAMI, etc. One 20 µm thick diamond radiator from Jefferson lab and one 100 µm thick diamond radiator from MAMI were investigated by X‐ray rocking curve and topograph measurements. The rocking curve results suggest that the 20 µm thick diamond radiator is severely deformed which explains why this diamond radiator showed unstable performance in the coherent bremsstrahlung experiments. The 100 µm thick diamond radiator was radiation damaged after being used in an 855 MeV electron beam line for several years. At the radiation damage region, it was found that the rocking curve width is significantly broadened, and the rocking curve peak position shifted towards the larger angle side by around 200 arcsec. Raman test confirmed that a significant amount non‐diamond phase exist at the radiation damage region.

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Section: Introductionmentioning

confidence: 99%

High resolution X‐ray diffraction study of single crystal diamond radiators

Yang

Livingston

Jones

et al. 2012

Physica Status Solidi (a)

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“…7). Then, we calculated the induced vacancy density at a given fluence and energy to be   [43,44] such an hypothesis is valid and provides an adequate description of the ion-induced damage process in diamond in many respects.…”

Section: Simulation Of the Ion Damagementioning

confidence: 99%

Complex refractive index variation in proton-damaged diamond

Lagomarsino¹,

Olivero²,

Calusi³

et al. 2012

Opt. Express

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An accurate control of the optical properties of single crystal diamond during microfabrication processes such as ion implantation plays a crucial role in the engineering of integrated photonic devices. In this work we present a systematic study of the variation of both real and imaginary parts of the refractive index of single crystal diamond, when damaged with 2 and 3 MeV protons at low-medium fluences (range: 10 15 -10 17 cm 2 ). After implanting in 125 × 125 μm 2 areas with a scanning ion microbeam, the variation of optical pathlength of the implanted regions was measured with laser interferometric microscopy, while their optical transmission was studied using a spectrometric set-up with micrometric spatial resolution. On the basis of a model taking into account the strongly non-uniform damage profile in the bulk sample, the variation of the complex refractive index as a function of damage density was evaluated. ©2012 Optical Society of America

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“…This can explain why nanopillars of lower density and larger size ͑diameter and height͒ were observed at low etching powers. 9,15,16 For example, Hickey et al 17 reported that sp 3 carbons could be transformed into an amorphous phase by ion implantation. 5͑b͔͒.…”

Section: Resultsmentioning

confidence: 99%