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  • 1
    Electronic Resource
    Electronic Resource
    Cumulative yields of short-lived ruthenium isotopes in the thermal neutron induced fission of233U,235U and239Pu (1985)
    Springer
    Journal of radioanalytical and nuclear chemistry 91 (1985), S. 73-79 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Cumulative yields of short-lived ruthenium isotopes in the thermal neutron induced fission of235U,235U and239Pu have been determined using a fast radiochemical separation technique followed by gamma spectrometry. The cumulative yields of107Ru and103Ru in233U (nth, f) and107Ru and109Ru in239Pu (nth, f) are determined for the first time. The measured cumulative yields are converted to chain yields assuming normal charge distribution systematics for comparison with the literature data on chain yields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02036311
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  • 2
    Electronic Resource
    Electronic Resource
    Fragment angular momenta in low and medium energy fission of242Pu (1987)
    Springer
    The European physical journal 327 (1987), S. 225-229 
    Details
    ISSN: 1434-601X
    Keywords: 25.85.Ge ; 25.85.Ec
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Independent isomeric yield ratios of128Sb were determined radiochemically in the thermal neutron induced fission of241Pu and 34 MeV alpha particle induced fission of238U, both involving the same compound nucleus (242Pu). Fragment angular momenta estimated from the measured isomer ratios using the statistical model analysis showed significantly larger fragment angular momenta in the medium energy fissioning system compared to the low energy fissioning system. This has been attributed to the effect of higher excitation energy and angular momentum in the entrance channel leading to increased fragment temperature, moments of inertia and angular velocity. An attempt was made to calculate the fragment angular momentum in the medium energy fission using the Fermi gas model for the fissioning nucleus, taking into account the multichance fission, saddle shapes of the fissioning nuclei and the angular velocity components of the fissioning nuclei both along and orthogonal to the fission axis. The calculated angular momenta agree well with the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292412
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  • 3
    Electronic Resource
    Electronic Resource
    Beta-branching fraction of117Cd isomers and it branching of117mIn (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 109 (1987), S. 37-43 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Using radiochemical and gamma spectrometric technique the branching fractions in the beta decay of117Cd isomers and the internal transition branching of117mIn have been established. The beta branching fraction of117gCd→117gIn was obtained as 0.86±0.06 and the value of117mCd→117gIn was found to be less than 1%. The internal transitin branching and the isomer cross-section ratio were obtained as 0.31±0.02 and 0.197±0.002, respectively. From the measured isomer cross-section ratio the spin cut-off parameter was evaluated, which agreed with the value reported in the literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02117521
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  • 4
    Electronic Resource
    Electronic Resource
    Cumulative yields of short-lived xenon isotopes in the spontaneous fission of252Cf (1990)
    Springer
    Journal of radioanalytical and nuclear chemistry 140 (1990), S. 215-218 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Cumulative yields of short-lived xenon isotopes137,138,139Xe have been determined in the spontaneous fission of252Cf, using a fast radiochemical separation method followed by gamma spectrometry. Xenon-137 yield is reported for the first time. The measured cumulative yields are converted to chain yields assuming normal charge distribution systematics for comparision with the literature data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037379
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  • 5
    Electronic Resource
    Electronic Resource
    Multielement analysis of natural ruby samples by neutron activation using the single comparator method (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 220 (1997), S. 223-227 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Multielement analysis was carried out in two samples of natural rubies obtained from Kenya and Tanzania and a synthetic ruby obtained locally. The trace element profile was used to characterise the ruby samples. Instrumental Neutron Activation Analysis (INAA) by the single comparator (K 0 method) was used to determine the concentrations of 22 elements with gold as the comparator. High resolution γ-ray spectrometry was employed for radiometric assay of the activation products. The accuracy and precision were evaluated by analysing standard reference materials such as USGS-W-1 and AGV-1 and were found to be satisfactory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02034860
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of palladium by chemical neutron activation analysis using low energy photon spectrometry (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 240 (1999), S. 877-881 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A chemical neutron activation analysis method to determine trace amounts of palladium present in the uranium ores has been developed. Palladium was concentrated on an anionic exchanger to purify from large amounts of uranium, iron and copper that were present in the ore. The resin in which Pd was adsorbed was neutron irradiated and the activation product109Pd was assayed through its daughter109mAg by low energy photon spectrometry to estimate palladium. Both the 88 keV gamma-line and the 22 keV X-ray line (arising out of the internal transition of109mAg) were used to arrive at the concentration values by a standard comparison technique. A thin window Si(Li) detector and an HPGe detector were used for the radioactive assay. Detection limits and the advantage of using the X-ray line of Ag over that of the gamma-line were discussed. An absolute detection limit of 0.12·10−9 g could be arrived at by the use of the 22.10 keV X-ray line in an interference-free condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349865
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  • 7
    Electronic Resource
    Electronic Resource
    Determination of Essential Elements in Ayurvedic Medicinal Leaves by k0 Standardized Instrumental Neutron Activation Analysis (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 243 (2000), S. 783-788 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Elemental concentrations of a few medicinal leaves are determined by instrumental neutron activation analysis using the single comparator (k 0) method. Data obtained for neem leaves, collected from two different places, have been used to see the effect of soil condition. The applicability of the method particularly for the simultaneous determination of Ca, Mg, V and Al in biological matrices has been evaluated in terms of the detection limit, precision and accuracy. The method was validated by analysing the NIST Standard Reference Material (SRM-1571) and it was found that the elemental concentrations measured in SRM-1571 are within ±10% of the reported values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010659411987
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  • 8
    Electronic Resource
    Electronic Resource
    Iodide and iodine uptake in plants (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 155 (1991), S. 391-402 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The influence of chemical forms of iodine (I− and I2) on the uptake by wheat plant (Triticum aestivum) as a function of growth, in terms of days since germination, has been studied. The normalized amount on fresh weight basis of I− and I2 absorbed by root, shoot and plant as a whole was determined by independent experiments. Both chemical forms of iodine were tagged with131I for radiometric assay. The transport index, depletion factor and shoot to root ratios were determined. The total amount of iodine absorbed increases as a function of growth in case of both chemical forms; however, uptake and transportation of I− is greater as compared to I2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02163633
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  • 9
    Electronic Resource
    Electronic Resource
    A rapid and selective separation of palladium (1992)
    Springer
    Journal of radioanalytical and nuclear chemistry 162 (1992), S. 155-162 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Palladium was separated from Al, Ru, Rh, U, Pu and also from a mixture of fission products using α-benzoin-oxime as the extractant and Solvesso-100 as the diluent. The extraction is quantitative over a wide range of acidity from 0.1M to 4M HNO3. The method has been found to be equally effective to separate Pd at trace level (carrier-free form). The stoichiometry of the complex, the interference of foreign elements in Pd separation, etc., are reported. The applicability of the method to separate palladium formed in fission rapidly from all other fission products, especially the most strongly interfering molybdenum isotopes, and the recovery of this element from high level radioactive waste are also mentioned.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02039936
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  • 10
    Electronic Resource
    Electronic Resource
    Separation of carrier-free111In formed in the12C+Rh reaction (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 242 (1999), S. 537-539 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract An alternative reaction route for the production of111In from rhodium target bombarded with a12C beam has been developed. Sulfate fusion was adapted for dissolution of the irradiated rhodium metal target. Indium was coprecipitated with La(OH)3 and purified by solvent extraction of the InBr3 complex into di-isopropyl ether and back extraction in 6M HCl. The chemical yield of the separation, determined using105Rh as tracer, was found to be above 90%. The radionuclidic purity of the separated111In satisfies the requirement prescribed for radiopharmaceutical preparations. The radioactivity yield achieved using this route was about 0.2 MBq/μAh.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02345589
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