Radiation defects in lithium fluoride induced by heavy ions

Trautmann, C.; Schwartz, K.; Costantini, Jean‐Marc; Steckenreiter, Thomas; Toulemonde, M.

doi:10.1016/s0168-583x(98)00427-3

Cited by 72 publications

(47 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The g-photons, which were taken from a 60 Co decay (energy E = 1.17 and 1.33 MeV, dose D = 1 kGy À 5 MGy) and the electrons (E = 20 MeV, D = 100 kGy) create a homogeneous distribution of defects. In contrast irradiation with swift heavy ions like 208 Pb (E = 29 MeV/u) causes an inhomogeneous distribution [15,[20][21][22] consisting of a core region of 2-4 nm diameter around the ion track, where the high defect concentration leads to aggregates of defects and Li clusters, while the halo region with a diameter of 20-30 nm contains mostly F centers and their agglomerates [15,23].…”

Section: Introductionmentioning

confidence: 99%

F centers in LiF: A nuclear magnetic resonance study

Klempt

Kanert

Suter

2003

Physica Status Solidi (b)

View full text Add to dashboard Cite

PACS 61.82. Ms, 76.30.Mi, 76.60.Es Ionizing radiation like g-rays, electrons, or swift heavy ions create a variety of point defects in dielectric materials. The largest fraction of the defects consists of the paramagnetic F centers. Here, we study those F centers in LiF by nuclear magnetic resonance. Nuclear spin relaxation (T 1 ) measurements serve as a probe for the F centers offering the possibility to investigate their dynamics as a function of temperature and irradiation dose. Moreover, one is able to estimate the content of the paramagnetic defects from the T 1 -data over a wide range of concentration. We further observed and analyzed radiation annealing occurring at temperatures above 360 K.

show abstract

Section: Introductionmentioning

confidence: 99%

F centers in LiF: A nuclear magnetic resonance study

Klempt

Kanert

Suter

2003

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

“…also by a larger surface area corresponding to a lower dose. Spectra for all samples were similar and showed F , F 2 , and F n absorption bands typical for high uence irradiations [1,3].…”

Section: Introductionmentioning

confidence: 78%

“…Irradiation was performed with 2.2 GeV Au ions, which in LiF produce complex tracks consisting of core region containing small defect aggregates and a surrounding halo region where mostly single defects are created [1]. Such tracks similar to dislocations exhibit stress elds and can be revealed by selective chemical etching.…”

Section: Introductionmentioning

confidence: 99%

Formation of Dislocation Structure in LiF Crystals Irradiated with Swift Heavy Ions under Oblique Incidence

et al. 2014

View full text Add to dashboard Cite

The structural modications of LiF irradiated with swift heavy ions under oblique angles have been investigated using AFM, SEM, chemical etching, nanoindentation and optical absorption spectroscopy. LiF crystals were irradiated under incidence angles of 30 and 70 degrees with 2.2 GeV Au (uence 5 × 10 11 ions cm −2 ) and 150 MeV Kr ions (uence 10 12 10 14 ions cm −2 ). Structural study on sample cross-sections shows that two damage regions, (1) nanostructured zone and (2) dislocation rich zone, which are typical for irradiations at normal incidence, appear also in samples irradiated under oblique angles. However in the latter case a more complex structure is formed that leads to stronger ion-induced hardening.

show abstract

“…In this region, F-centers are abundant, indicating that the track halo is a strained LiF crystal. The F-center diameter of a track created under linear energy transfer (LET) of 24 keV nm À1 , for example, is~60 nm Trautmann, Schwartz, Costantini et al, 1998;. As indicated by small-angle X-ray scattering (SAXS) patterns, the track core is a continuous $3 nmwide region of modified density Trautmann, Schwartz, Costantini et al, 1998;.…”

Section: Introductionmentioning

confidence: 99%

“…The F-center diameter of a track created under linear energy transfer (LET) of 24 keV nm À1 , for example, is~60 nm Trautmann, Schwartz, Costantini et al, 1998;. As indicated by small-angle X-ray scattering (SAXS) patterns, the track core is a continuous $3 nmwide region of modified density Trautmann, Schwartz, Costantini et al, 1998;. The track exhibits highly enhanced chemical reactivity (Young, 1958;, particularly along its core (Abu Saleh & Eyal, 2003), which is an important technological property.…”

Section: Introductionmentioning

confidence: 99%

Core structure of latent heavy-ion tracks in {100} LiF derived by small-angle X-ray scattering

Saleh

Eyal

2007

J Appl Cryst

View full text Add to dashboard Cite

Radial electron densities within 27-111 mm-long ion damage trails, 'latent ion tracks', created in {100} LiF by irradiation with GeV Pb and U projectiles, have been derived by means of small-angle X-ray scattering. The tracks exhibit continuous electron density decreases of 49-74% along the centers of their 2.3-3.4 nm-diameter cores. Structural alteration under the intense ion-deposited electronic excitation has been attributed to two successive processes: (a) local breakdown of the LiF lattice into fluorine molecules and Li atoms, and (b) release of the fluorine gas and of at least a portion of the voluminous Li atoms through the low-density tracks.

show abstract

Radiation defects in lithium fluoride induced by heavy ions

Cited by 72 publications

References 36 publications

F centers in LiF: A nuclear magnetic resonance study

F centers in LiF: A nuclear magnetic resonance study

Formation of Dislocation Structure in LiF Crystals Irradiated with Swift Heavy Ions under Oblique Incidence

Core structure of latent heavy-ion tracks in {100} LiF derived by small-angle X-ray scattering

Contact Info

Product

Resources

About