Molecular model of radiation damage in Cs2S2O6 crystals at room temperature

Mahgoub, Abdalla S.; Lund, Anders; Liminga, R.

doi:10.1016/0146-5724(83)90008-0

Cited by 7 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The far most intense absorption line has been identified as due to SO3 -anion radicals in some cases stabilized at two inequivalent sites (Baran et al 2006(Baran et al , 2007(Baran et al , 2008. This is similar to the radical formation observed in irradiated caesium dithionate (Mahgoub et al 1983(Mahgoub et al , 1994.…”

Section: Introductionsupporting

confidence: 71%

“…The two signals are assigned to two non-equivalent SO -3 -radicals due to the irradiation induced cleavage of the S-S bond with similarities to the radical formation observed in irradiated caesium dithionate (Mahgoub et al 1983(Mahgoub et al , 1994 and irradiated barium dithionate (Baran et al 2006(Baran et al , 2007. The two SO3 -radicals in K2S2O6 are probably located in different sites in the crystal lattice, and it is not unreasonable that they therefore have different microwave power saturation properties with R1 being more easily saturated than R2.…”

Section: R1 / R2 Ratio For Different Beam Qualities (Different Beam Let)mentioning

confidence: 99%

See 1 more Smart Citation

Potassium dithionate EPR dosimetry for determination of absorbed dose and LET distributions in different radiation qualities

Gustafsson

Lund

2011

Radiation Measurements

Self Cite

View full text Add to dashboard Cite

With an increasing interest in using protons and light ions for radiation therapy there is a need for possibilities to simultaneously determine both absorbed dose (D) and linear energy transfer, LET, (LΔ). Potassium dithionate (K2S2O6) tablets were irradiated in a conventional 6 MV linear accelerator photon beam and a N 7+ beam (E = 33.5 MeV/u) respectively. The EPR spectrum of irradiated potassium dithionate is a narrow doublet consisting of two signals, R1and R2, with different microwave power saturation properties. On the basis of identification in related substances by EPR and ENDOR, these two signals are assigned to two nonequivalent SO3 --radicals. Our experiments showed that the ratios of these two lines (R1/R2) were clearly connected to beam LET. Irrespective of the mechanistic details this investigation suggests a new method for measurement of absorbed dose and beam LET by using potassium dithionate EPR dosimetry.

show abstract

Section: Introductionsupporting

confidence: 71%

Section: R1 / R2 Ratio For Different Beam Qualities (Different Beam Let)mentioning

confidence: 99%

Potassium dithionate EPR dosimetry for determination of absorbed dose and LET distributions in different radiation qualities

Gustafsson

Lund

2011

Radiation Measurements

Self Cite

View full text Add to dashboard Cite

show abstract

“…In most of the previously investigated dithionates the EPR spectrum consisted of a single structureless line. In Cs 2 S 2 O 7, however, hyperfine structure from 133 Cs was observed and assigned to the trapped Cs + … SO 3 -complex [18,19]. The hyperfine coupling to the protons and/or the nitrogen of the ammonium group is not resolved in the EPR spectrum of ammonium dithionate.…”

Section: Resultsmentioning

confidence: 97%

Ammonium dithionate—A new material for highly sensitive EPR dosimetry

Danilczuk

Gustafsson

Sastry

et al. 2008

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

View full text Add to dashboard Cite

Polycrystalline ammonium dithionate has been examined for its radiation response in the low dose range (< 5 Gy) using EPR technique. The-radical ion was detected as a single EPR line with a peak-to-peak derivative width of ca. 0.44 mT in irradiated samples and its intensity was found to vary linearly with dose. At equal and moderate settings of microwave power and modulation amplitude ammonium dithionate was at least 7 times more sensitive than L-alanine which is the most common EPR dosimeter standard. Pulse experiments were performed on the powder samples to obtain the longitudinal relaxation time. These and microwave saturation experiments served to indicate the optimal microwave power to be applied during measurements as an EPR dosimeter for best sensitivity of this material. It is thus claimed that ammonium dithionate has excellent potential to become an EPR dosimeter with a low limit of the measurable dose for cases where tissue equivalence is not required or can be corrected for.3

show abstract

Gamma ray induced decomposition of double nitrates of lanthanum and cerium with some mono and bivalent cations in solid state

Kulkarni

Garg

1991

International Journal of Radiation Applications and Instrumenta

View full text Add to dashboard Cite

Molecular model of radiation damage in Cs2S2O6 crystals at room temperature

Cited by 7 publications

References 8 publications

Potassium dithionate EPR dosimetry for determination of absorbed dose and LET distributions in different radiation qualities

Potassium dithionate EPR dosimetry for determination of absorbed dose and LET distributions in different radiation qualities

Ammonium dithionate—A new material for highly sensitive EPR dosimetry

Gamma ray induced decomposition of double nitrates of lanthanum and cerium with some mono and bivalent cations in solid state

Contact Info

Product

Resources

About