Novel ultra-fast luminescence from incipient ion tracks of insulator crystals: electron–hole plasma formation in the track core

Kimura, K.; Sharma, Sumit; Попов, А. И.

doi:10.1016/s1350-4487(01)00131-7

Cited by 12 publications

(7 citation statements)

References 12 publications

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“…A novel ultra‐fast luminescence from incipient ion tracks of insulator crystals was also revealed in Ref. 66. A theoretical consideration and some experimental manifestations of the third mechanism of radiation damage in Y 3 Al 5 O 12 are presented in Ref.…”

Section: Resultsmentioning

confidence: 98%

On the mechanisms of radiation damage and prospects of their suppression in complex metal oxides

Lushchik

Nagirnyi

et al. 2013

Physica Status Solidi (b)

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The influence of some impurity ions on the increase/decrease in the resistance against irradiation of metal oxides with X‐rays and electrons (low‐dense excitation) or ∼2 GeV Au198 and U238 ions providing a superhigh density of electronic excitations along cylindrical tracks (LET > 30 keV nm−1) has been investigated for fcc MgO single crystals with close ion masses or Lu3Al5O12 and Gd2SiO5 with large unit cells and heavy cations. The radiation effects have been studied using the methods of low‐temperature vacuum ultraviolet spectroscopy (up to 40 eV), cathodoluminescence and thermoactivation spectroscopy. The step‐by‐step annealing of the radiation‐induced absorption, scattering, and luminescence has been performed at the heating of irradiated crystals up to ∼70% of a melting point. Possible experimental manifestations of the temperature‐stable nanosize 3D defects created, according to theoretical predictions, via rearrangement of many host ions at the collapse of discrete solitons (breathers) are detected in Lu3Al5O12 and Gd2SiO5 crystals irradiated with swift heavy ions (fluence of 1012 ions cm−2).

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Section: Resultsmentioning

confidence: 98%

On the mechanisms of radiation damage and prospects of their suppression in complex metal oxides

Lushchik

Nagirnyi

et al. 2013

Physica Status Solidi (b)

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“…Time-resolved measurement is a major asset to investigate the excitation and energy transfer processes involved in luminescence, which often occur over a few nanoseconds at most. To our knowledge, the only device allowing for the investigations of scintillators dynamics under swift heavy ion irradiation was developed by K. Kimura and collaborators [1][2][3][4][5][6][7]. With a resolution of about 85 ps, their instrument extended the field of investigations towards the primary processes under extremely high-density excitation.…”

Section: Introductionmentioning

confidence: 99%

“…UFL is a wide wavelength range emission that can be as short as several tens of picoseconds. This phenomenon cannot be attributed to known excited species but was interpreted to result from the relaxation of dense electron-hole plasma in the track core of swift heavy ions [4][5][6][7]. This is an example of the uniqueness of the phenomena induced by swift heavy ion irradiation, where energy deposition can be orders of magnitude higher than by electron or X-ray irradiation.…”

Section: Introductionmentioning

confidence: 99%

“…Our first investigations using SPORT were performed on a widely used plastic scintillator: BC-400, also known as NE-102A. Plastic scintillators cumulate many advantages such as fast and short time responses, facilitated 5 shaping and low costs. Therefore they have been used for decades in many radiation applications [8].…”

Section: Introductionmentioning

confidence: 99%

“…Especially, one of their remarkable outcome was to evidence a novel ultra-fast luminescence (UFL) in almost all of the insulators investigated [4][5][6][7]. UFL is a wide wavelength range emission that can be as short as several tens of picoseconds.…”

Section: Introductionmentioning

confidence: 99%

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SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence – Application to luminescence degradation of a fast plastic scintillator

Gardès¹,

Balanzat²,

Ban-d’Etat³

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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We developed a new sub-nanosecond time-resolved instrument to study the dynamics of UVvisible luminescence under high stopping power heavy ion irradiation. We applied our instrument, called SPORT, on a fast plastic scintillator (BC-400) irradiated with 27-MeV Ar ions having high mean electronic stopping power of 2.6 MeV/µm. As a consequence of increasing permanent radiation damages with increasing ion fluence, our investigations reveal a degradation of scintillation intensity together with, thanks to the time-resolved measurement, a decrease in the decay constant of the scintillator. This combination indicates that luminescence degradation processes by both dynamic and static quenching, the latter mechanism being predominant. Under such high density excitation, the scintillation deterioration of BC-400 is significantly enhanced compared to that observed in previous investigations, mainly performed using light ions. The observed non-linear behaviour implies that the dose at which luminescence starts deteriorating is not independent on particles' stopping power, thus illustrating that the radiation hardness of plastic scintillators can be strongly weakened under high excitation density in heavy ion environments.

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Creation and clustering of Frenkel defects at high density of electronic excitations in wide-gap materials

Lushchik

Schwartz³

et al. 2012

Nuclear Instruments and Methods in Physics Research Section B:

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Novel ultra-fast luminescence from incipient ion tracks of insulator crystals: electron–hole plasma formation in the track core

Cited by 12 publications

References 12 publications

On the mechanisms of radiation damage and prospects of their suppression in complex metal oxides

On the mechanisms of radiation damage and prospects of their suppression in complex metal oxides

SPORT: A new sub-nanosecond time-resolved instrument to study swift heavy ion-beam induced luminescence – Application to luminescence degradation of a fast plastic scintillator

Creation and clustering of Frenkel defects at high density of electronic excitations in wide-gap materials

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