Selective removal of radio-sodium from neutron-activated materials by retention on hydrated antimony pentoxide

Girardi, F.; Sabbioni, E.

doi:10.1007/bf02530237

Cited by 154 publications

(20 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cosmochim. Acta29, 1263Acta29, (1965 Samples were transferred pneumatically to the Ge(Li) spectrometry system and counted at regular intervals to establish the decay of 2K A1, 49 Ca, 51 Ti, 52 V, 24 Na, 56 Mn and 27 Mg. Tables 2 and 3. Table 2 shows results obtained for major elements and Table 3 Tables 2 and 3 Ge(Li) spectrum of W-1 after 24 Na separation.…”

Section: Discussionmentioning

confidence: 99%

“…56 Mn produced from 56 Fe by activation with fast neutrons and from 55 Mn by activation with thermal neutrons, emits gamma rays of energy of 0.84, The gamma spectra are collected by a Nuclear Data 2200 system with 2048 channel memory and spectrum stabilizer. The output of the analyzer is by punched paper tape for computer use.…”

Section: Acknowledgmentmentioning

confidence: 99%

“…13 n-cm~2 -sec~\ then removed from the rabbit and counted. Each sample was counted twice to check on the decay time of 49 Ca and 56 Mn. The use of the semiconductor was necessary because:…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modern trends in activations analysis vol. 1

DeVoe¹,

LaFleur²

1969

View full text Add to dashboard Cite

One important mechanism by which the Division exercises leadership in the "state of the art" of a competence is that of sponsoring special conferences and symposia. Experts from around the world are invited to these conferences to summarize the present status of the many facets of a particular competence. In addition, contributed papers as well as comments of rapporteurs or summaries of panel discussions are often used to help better define this status.The first such conference sponsored by the Division was a broad one on "Trace Characterization -Chemical and Physical" held October 3-7. 1966 at the new NBS Laboratories at Gaithersburg, Maryland.On June [12][13] 1967, a seminar on a more restricted topic, "Quantitative Electron Probe Microanalysis," was held in these same facilities. The hard-cover proceedings of each of these meetings are available from the Government Printing Office as NBS Monograph 100 and NBS Special Publication 298, respectively.As a continuation of these definitive "state of the art" conferences, Authors were encouraged to make liberal use of figures and tables for the preparation of the condensations which appear in these proceedings.These condensations were then made available to the attendees one week prior to the beginning of the conference in a preprint booklet.Although each condensation was carefully edited and the author's corrections have been made, questions resulting from the absence of the usual "refereeing system" may arise. All authors of condensations are encouraged to publish their work in greater detail in a formal scientific periodical of their choice.Each day of the conference began with a "state of the art" plenary lecture on a major phase of the activation analysis technique. In order to provide complete coverage of the field, simultaneous sessions were required. The regrettable problem that the attendee faced in wanting to be in two places at once was alleviated to some degree by convening a plenary panel discussion at the end of each day in which all of the chairmen of the day's sessions provided a synopsis of the major points of discussion in their particular session. Synopses of these discussions appear in these proceedings.The availability of highly efficient business machines when combined with the format for this conference, provided for rapid publication of the proceedings (which is a necessity if conference proceedings are to have any useful purpose). All of the papers were typed on a typewriter that was connected to a magnetic tape recorder. The typewritten copy was reproduced to create the preprint. Authors were asked to edit their paper in the preprint. These corrections along with properly coded v VI PREFACE instructions were entered onto the previously recorded tape. This tape was then converted to a computer-compatible tape which was formatted to be processed through an automated typesetting system, with graphicart quality, at the Government Printing Office. Since uncorrected parts remained unchanged on the tape, the author's correction of the preprint co...

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Acknowledgmentmentioning

confidence: 99%

See 1 more Smart Citation

Modern trends in activations analysis vol. 1

DeVoe¹,

LaFleur²

1969

View full text Add to dashboard Cite

show abstract

“…-21- Edgington and Lucas (1971) and Girardi and Sabbioni (1968) 24 have developed a method of removing Na, the major interference in NAA of environmental samples, based on selective 24 retention of the Na on hydrated antimony pentoxide (HAP). 24 182 233 All neutron activation products, except Na, Ta and Pa, reportedly pass through the HAP column and are measured by Ge(Li) gamma-ray spectrometry.…”

Section: Figure 4 Gamma-ray Spectrum Of Neutron Activated River Watermentioning

confidence: 99%

Neutron activation techniques for the measurement of trace metals in environmental samples

Robertson¹,

Carpenter²

1974

View full text Add to dashboard Cite

“…The 28 Mg produced in this way is not free from other radionuclides. Excluding relatively short-lived radionuclides, where decay is virtually complete within one hour after the end of irradiation, the following contaminants will remain [4]: (i) tritium from 6 Li(n,a) 3 H reaction, (ii) 18 F from the ie O(t,n) 18 F reaction with oxygen present as impurity in the alloy and particularly in the oxide film on the alloy foil, (iii) 24 Na from the 25 Mg(t,a) 24 Na and 24 Mg(n,p) 24 Na and from (n,y)-activation of any sodium impurities and (iv) contaminants resulting from the (n,y)-activation of other possible impurities in the target material (for example 56 Mn from manganese). Various radiochemical separations of 28 Mg from irradiated Li-Mg alloys are known.…”

Section: Introductionmentioning

confidence: 99%

Separation of ²⁸Mg from Reactor-Neutron Irradiated Li-Mg Alloy and Redetermination of its Half-life

Kolář¹,

Velden²,

Vollinga³

et al. 1991

Radiochimica Acta

View full text Add to dashboard Cite

Li-Mg alloy target / Reactor-neutron irradiation / 28 Mg / Radiochemical separation / Polyantimonic acid/ 28 Mg half-life Summary A novel method for the radiochemical separation of 28 Mg from reactor-neutron irradiated Li-Mg alloy was developed. It is based on the use of the inorganic ion-exchanger, polyantimonic acid, as a removing agent for both 24 Na and "Mn. The final preparations were free of all y-rays emitting contaminants but containing some tritium. The redetermination of the half-life of 28 Mg resulted in 20.915 + 0.009 hour.

show abstract

Selective removal of radio-sodium from neutron-activated materials by retention on hydrated antimony pentoxide

Cited by 154 publications

References 1 publication

Modern trends in activations analysis vol. 1

Modern trends in activations analysis vol. 1

Neutron activation techniques for the measurement of trace metals in environmental samples

Separation of ²⁸Mg from Reactor-Neutron Irradiated Li-Mg Alloy and Redetermination of its Half-life

Contact Info

Product

Resources

About

Selective removal of radio-sodium from neutron-activated materials by retention on hydrated antimony pentoxide

Cited by 154 publications

References 1 publication

Modern trends in activations analysis vol. 1

Modern trends in activations analysis vol. 1

Neutron activation techniques for the measurement of trace metals in environmental samples

Separation of 28Mg from Reactor-Neutron Irradiated Li-Mg Alloy and Redetermination of its Half-life

Contact Info

Product

Resources

About

Separation of ²⁸Mg from Reactor-Neutron Irradiated Li-Mg Alloy and Redetermination of its Half-life