Effect of proton irradiation on the critical current and critical temperature of Bi-2212 wires

Ghosh, A.; Greene, G.A.

doi:10.1063/1.4712115

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…That is, the change of T c is relatively small compared to the errors. However, degradations of T c (R = 0) were reported in the 142 MeV proton irradiated Bi-2212 wires [21], ions irradiated Bi-2212 films [22] and 15 MeV protons irradiated textured Bi-2212 [23]. The differences between the results of this study and those of previous study can be resulted from differences of irradiation parameters.…”

Section: Superconducting Properties and Microstructure Characterizationcontrasting

confidence: 84%

“…That is, the long-range order within ceramic core is decreased. Increases of ∆T were also detected in the irradiated Bi-2212 [21,22]. It should be noted that there is no any other transition process discovered in the Resistance-Temperature curves, indicating no superconducting phase except for Bi-2212.…”

Section: Superconducting Propertiesmentioning

confidence: 71%

“…With the increase of irradiation time, ∆T shows a continuing increase trend. In superconducting materials, the changes of structures within materials would result in changes in T c [21]. The increase of ∆T can be explained by the structure changes within ceramic core, like the production of low T c regions, amorphous regions and so on.…”

Section: Superconducting Propertiesmentioning

confidence: 99%

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The evolution of properties and microstructure of Bi-2212 wires after gamma-ray irradiation

Zhang¹,

Zhou²,

Qin³

et al. 2021

Supercond. Sci. Technol.

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Among various high-temperature superconducting materials, Bi2Sr2CaCu2O8+x (Bi-2212) is considered as one of the most promising candidates to fabricate superconductors for magnetic confinement fusion reactors. Considering that the superconductors will be subject to irradiation in nuclear reactors, the effects of gamma-ray irradiation on the superconducting properties of Bi-2212 wires is studied in the present work. Critical current (I c) tests have been done for Bi-2212 wires with different gamma-ray irradiation doses and the variation of I c is correlated to the change of microstructures. During the 12 T I c tests, the normalized I c first rises to 1.15 then decreases to 0.89 with the increase of irradiation time. Results from x-ray diffraction, Raman spectroscopy and x-ray photoelectron spectroscopy indicate that defects are produced within the gamma-ray irradiated samples. From the images of high resolution transmission electron microscopy, amorphous structure in the gamma-ray irradiated sample is discovered as well.

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Section: Superconducting Properties and Microstructure Characterizationcontrasting

confidence: 84%

Section: Superconducting Propertiesmentioning

confidence: 71%

Section: Superconducting Propertiesmentioning

confidence: 99%

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The evolution of properties and microstructure of Bi-2212 wires after gamma-ray irradiation

Zhang¹,

Zhou²,

Qin³

et al. 2021

Supercond. Sci. Technol.

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“…It will also be utilized for production and study of exotic nuclei close to the drip lines using projectile fragmentation and deep inelastic reactions [9][10][11][12][13]. One beam hall has been earmarked for multidisciplinary research in condensed matter such as radiation damage of nuclear structure materials [14], high 𝑇 𝑐 superconductors and conducting polymers [15,16], among others. It will also be used for nuclear chemistry applications like reaction mechanism studies, multi-tracers for biomedical use, proton radiography.…”

Section: Introductionmentioning

confidence: 99%

A beam dynamics study for efficient extraction from the VECC K500 superconducting cyclotron

Paul¹,

Bhunia²,

Debnath³

et al. 2022

J. Inst.

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Beam extraction from the K500 superconducting cyclotron is very challenging due to its long extraction path of about 330° with very high magnetic field gradient and low acceptance. The initial attempts of beam extraction showed that the pilot beams could successfully clear only a few magnetic channels. To investigate the causes of the beam loss, magnetic field measurements in different zones of the cyclotron were repeated. The total field has been generated by superposition of the measured field and the numerically computed field of the extraction elements. Based on these data, extensive beam dynamics simulation has been carried and beam distribution at the entry of the extraction path obtained by accelerated orbit calculations. The energy spread due to multi-turn deflector entry has been included in the simulation. The beam envelope along the extraction path as well as the beam transmission efficiency has been determined for different positions of the extraction elements. The radial positions of the extraction elements have been optimized parametrically to compute the maximum transmission efficiency. The present studies have enabled us to successfully extract the pilot beam (N4+) from the cyclotron with beam current of around 20 enA.

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High-Energy Ion Irradiation Induced Stepped Twins in the Ag Sheath of Bi2212 Superconductors

Zhu

Zhou

et al. 2021

J Supercond Nov Magn

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Effect of proton irradiation on the critical current and critical temperature of Bi-2212 wires

Cited by 4 publications

References 8 publications

The evolution of properties and microstructure of Bi-2212 wires after gamma-ray irradiation

The evolution of properties and microstructure of Bi-2212 wires after gamma-ray irradiation

A beam dynamics study for efficient extraction from the VECC K500 superconducting cyclotron

High-Energy Ion Irradiation Induced Stepped Twins in the Ag Sheath of Bi2212 Superconductors

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