1 MeV, 10 kW DC electron accelerator for industrial applications

Nayak, B.; Acharya, S.; Bhattacharjee, D.; Bakhtsingh, R. I.; Rajan, Rehim N.; Sharma, Dheeraj; Dewangan, S.; Sharma, Vijay; Patel, R.; Tiwari, Ratnesh; Benarjee, S.; Srivastava, Saurabh

doi:10.1088/1748-0221/11/03/p03006

Cited by 5 publications

(4 citation statements)

References 30 publications

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“…It should also be mentioned that ion implantation is one of the ways to make polymer useful for biomedical applications [9,10]. Indeed, there are other successful techniques allowing efficient modification of polymers, such as electron beam and gamma ray irradiations [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Modification of PET Polymer Foil by Na⁺ Implantation

et al. 2019

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Very thin (3 µm) polyethylene terephthalate (PET) foils were irradiated with 150 keV Na + ions with the fluences in the range from 1 × 10 14 cm −2 up to 1 × 10 16 cm −2. Modification of chemical structure of the implanted polymer was studied with the Fourier transform infrared and Raman spectroscopies. Destruction of numerous chemical bonds as well as formation of carbon clusters made of sp 2 hybridised C atoms and conducting cluster networks were demonstrated. The increasing presence of chain structures in the graphite-like carbonised layer is pointed out as the G band shift and decrease of D band could be seen as irradiation fluence rises. The large increase of the modified sample absorbance with the implantation fluence in the UV-VIS region was observed. The decrease of optical band-gap energy from 3.95 eV for the pristine sample down to 0.7 eV for the most heavily treated sample was estimated using the Tauc plot. Reduction of bulk resistivity by more than 8 orders of magnitude is shown in the case of the sample implanted with the fluence 1 × 10 16 cm −2. The sheet resistivity of the sample was also reduced by 5 orders of magnitude. The effect was observed on both sides of the sample, probably as the result of chemical transformations due to local increase of the polymer foil temperature. The moderate increase (15-200%) of the dielectric constant is observed in the frequency range up to 1 MHz and the change rises with the implantation fluence.

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Section: Introductionmentioning

confidence: 99%

Modification of PET Polymer Foil by Na⁺ Implantation

et al. 2019

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“…It should be mentioned here that not only classical ion implantation is employed for polymer modification, but plasma immersion [18][19][20] and laser-based techniques [21] are also becoming more and more common in this field. Other popular techniques that allow efficient treatment and modification of polymers are electron beams or gamma ray irradiations [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Modification of PET Foil by 150 keV Li⁺ Ion Implantation

et al. 2022

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Very thin (3 µm in thickness) polyethylene terephthalate polymer foils were implanted with 150 keV Li + with fluences in the range from 1×10 14 cm −2 up to 2×10 16 cm −2 . Modification of the irradiated polymer microstructure was studied with the Fourier transform infrared spectroscopy and Raman spectroscopy. Breaking of a variety of chemical bonds followed by the formation of carbon clusters made of sp 2 C was proved. The dominance of the rings in the carbonized, graphite-like subsurface layer is demonstrated based on the fact that the G band prevails in the Raman spectra for larger Li + fluences. The rise of the absorbance within 200-800 nm is observed. Tauc's plots analysis enables the estimation of optical bandgap values that decrease from 3.95 eV (pristine polyethylene terephthalate) down to 1.4 eV (fluence of 2 × 10 16 cm −2 ). This change is not as dramatic as in the case of heavier projectiles like K + or Na + . Reduction of surface resistivity by more than 2 orders of magnitude is observed in the case of the sample irradiated with the fluence 1 × 10 16 cm −2 , and this effect is much smaller than that induced by the heavier projectile bombardment with the same fluence. topics: polymers modification, ion implantation, polyethylene terephthalate (PET)

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“…The VMC comprises corona guards, DEE (RF) electrodes and diode stacks in a pressure vessel. Thanks to the low ripple output DC voltage characteristic, these accelerators are also widely being used for ion applications [4,5]. We have designed a compact mechanical structure (accelerator), with suitable properties in a pressure vessel.…”

Section: Introductionmentioning

confidence: 99%