Neutron irradiation effects on the structural properties of KU1, KS-4V and I301 silica glasses

Leon, M.; Giacomazzi, L.; Girard, S.; Richard, N.; Martin, P.; Martin-Samos, L.; Ibarra, Á.; Boukenter, A.; Ouerdane, Y.

doi:10.1109/radecs.2013.6937357

Cited by 4 publications

(8 citation statements)

References 57 publications

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“…The charged particles on the contrary interact strongly with electrons in their stopping trajectory and atomic displacements only become relevant at the end of their projected range. A clear difference appears at 900 cm -1 , a located band associated to small two-membered rings with one threefold oxygen atom [10], is noticeable for neutron irradiations but it was not detected in the case of ion irradiations. …”

Section: Comparison Of Ion and Neutron Irradiated Samplesmentioning

confidence: 88%

“…The 800 cm -1 band is related to TO and LO bending modes of the Si-O-Si inter-tetrahedral angle and bands at 1060 and 1200 cm -1 respectively related to the TO and LO asymmetric stretching modes [10,25,26].…”

Section: Ion-irradiated Samplesmentioning

confidence: 99%

“…Despite the difference on fluence, the spectra of ion-irradiated samples have been compared with the spectra of neutron irradiated samples at fluences 10 17 n/cm 2 and 10 18 n/cm 2 [10] to look for differences on the damage type. As a first result, the changes in the spectra due to neutron at 10 18 n/cm 2 are, in general, lower than the changes induced at high fluence ion irradiations as can be seen in Fig.…”

Section: Comparison Of Ion and Neutron Irradiated Samplesmentioning

confidence: 99%

“…Many of the works concerning ion irradiations in silica are related to the changes induced by irradiation, namely densification effects [2], modifications in optical properties (refractive index [3], ionoluminescence [4,5], optical [6,7,8,9] and infrared [7,10,11,12,13] absorption and reflectance [14], Raman scattering [10,15,16]), mechanical properties (near-surface hardness [16,17], compaction and plastic flow [18]), chemical stability [19] and etching rate of the irradiated surfaces [1,3,6]. From these works it is concluded that microscopic and macroscopic structural modifications can both saturate at some lattice damage level depending on the density of deposited energy [3].…”

Section: Introductionmentioning

confidence: 99%

“…Using Raman spectroscopy, we have studied how the structure of different types of glasses is affected by irradiation with different ions and at several fluences. The Raman spectra of ion-irradiated samples were compared with the spectra of neutron irradiated samples at fluences 10 17 n/cm 2 and 10 18 n/cm 2 [10].…”

Section: Introductionmentioning

confidence: 99%

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Raman measurements in silica glasses irradiated with energetic ions

Saavedra

León

Martin

et al. 2014

AIP Conference Proceedings

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Raman spectroscopic investigation of the structure of silicate glasses. III. Raman intensities and structural units in sodium silicate glasses The Journal of Chemical Physics 75, 3226 (1981) es ‡ Present address: Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR CNRS-UPS 8182, Université de Paris Sud, 91405 Orsay Cedex, FranceAbstract. Ion irradiation with energetic He + (2.5 MeV), O 4+ (13.5 MeV), Si 4+ (24.4 MeV) and Cu 7+ (32.6 MeV) species at several fluences (from 5 x 10 12 to 1.65 x 10 15 ion/cm 2 ) were performed in three types of SiO 2 glasses with different OH content (KU1, KS-4V and Infrasil 301). After ion implantation the Raman spectra were measured and compared with the spectra of unirradiated samples. Irradiated samples of the three fused silica grades exhibit changes in the broad and asymmetric R-band (ω 1 around 445 cm -1 ), in D 1 (490 cm -1 ) and D 2 (605 cm -1 ) bands associated to small-membered rings. The D 2 band shows an increase with increasing fluences for different ions, indicating structural changes. Raman spectra of ion-irradiated samples were compared with the spectra of neutron irradiated samples at fluences 10 17 n/cm 2 and 10 18 n/cm 2 . Macroscopic surface cracking was detected, mainly at fluences corresponding to deposited energies between 10 23 eV/cm 3 and 10 24 eV/cm 3 (after ion beam shutdown).

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Section: Comparison Of Ion and Neutron Irradiated Samplesmentioning

confidence: 88%

Section: Ion-irradiated Samplesmentioning

confidence: 99%

Section: Comparison Of Ion and Neutron Irradiated Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Raman measurements in silica glasses irradiated with energetic ions

Saavedra

León

Martin

et al. 2014

AIP Conference Proceedings

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Radiation-induced alteration of apatite on the surface of Mars: first in situ observations with SuperCam Raman onboard Perseverance

Clavé,

Beyssac,

Bernard

et al. 2024

Sci Rep

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Planetary exploration relies considerably on mineral characterization to advance our understanding of the solar system, the planets and their evolution. Thus, we must understand past and present processes that can alter materials exposed on the surface, affecting space mission data. Here, we analyze the first dataset monitoring the evolution of a known mineral target in situ on the Martian surface, brought there as a SuperCam calibration target onboard the Perseverance rover. We used Raman spectroscopy to monitor the crystalline state of a synthetic apatite sample over the first 950 Martian days (sols) of the Mars2020 mission. We note significant variations in the Raman spectra acquired on this target, specifically a decrease in the relative contribution of the Raman signal to the total signal. These observations are consistent with the results of a UV-irradiation test performed in the laboratory under conditions mimicking ambient Martian conditions. We conclude that the observed evolution reflects an alteration of the material, specifically the creation of electronic defects, due to its exposure to the Martian environment and, in particular, UV irradiation. This ongoing process of alteration of the Martian surface needs to be taken into account for mineralogical space mission data analysis.

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Evaluation of Distributed OFDR-Based Sensing Performance in Mixed Neutron/Gamma Radiation Environments

Rizzolo

Boukenter

Marin

et al. 2017

IEEE Trans. Nucl. Sci.

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We report the study of a radiation resistant single mode optical fiber doped with fluorine exposed to mixed neutron and gamma-radiation up to 10(17) n/cm(2) fluence and >2 MGy dose to evaluate its performances when used as the sensing element of a distributed Optical Frequency Domain Reflectometry (OFDR). The use of complementary spectroscopic techniques highlights some differences between the responses of solely gamma-radiation (10 MGy) or mixed neutron and. (10(17) n/cm2 + >2 MGy) irradiated samples. Those differences are linked to the defect generation rather than to structural changes of the a-SiO2 host matrix. We show that a modification of the refractive index of similar to 10(-5) is induced at the highest investigated neutron fluence. However, the feasibility of distributed temperature measurements along the irradiated fiber is demonstrated with an accuracy of 0.1 degrees C over a sensing length up to similar to 130 m with the tested OBR4600 interrogator. These results are very promising for the integration of OFDR sensors in mixed neutron and gamma radiation environments

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Neutron irradiation effects on the structural properties of KU1, KS-4V and I301 silica glasses

Cited by 4 publications

References 57 publications

Raman measurements in silica glasses irradiated with energetic ions

Raman measurements in silica glasses irradiated with energetic ions

Radiation-induced alteration of apatite on the surface of Mars: first in situ observations with SuperCam Raman onboard Perseverance

Evaluation of Distributed OFDR-Based Sensing Performance in Mixed Neutron/Gamma Radiation Environments

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