The measurement of some (p, n) and (p, 2n) reaction cross sections at 400 MeV

Reuland, D.J.; Caretto, A.A.

doi:10.1016/0022-1902(69)90005-0

Cited by 6 publications

(14 citation statements)

References 7 publications

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“…Metallic filings of 50 Cr°were converted almost quantitatively to pure 50 CrO 3 . The electrolyte was obtained by dissolution of the trioxide Table 2 (for more details cf.…”

Section: Target Preparationmentioning

confidence: 99%

“…Targets were prepared by electrodeposition of metallic 50 Cr°on gold cathodes, serving as chemically inert backings during and after the irradiation. Metallic filings of 50 Cr°were converted almost quantitatively to pure 50 CrO 3 .…”

Section: Target Preparationmentioning

confidence: 99%

“…[2]), estimated Coulomb barriers, advantages and disadvantages. The two most promising nuclear reactions are 50 Cr(d,n) 51 Mn and 52 Cr(p,2n) 51 Mn. The first reaction has already been applied to produce 51 Mn using 50 Cr 2 O 3 as target [ 3Ϫ 8].…”

Section: Introductionmentioning

confidence: 99%

“…For a comparison of the two processes, a determination of the excitation functions was mandatory. Furthermore, two chemical aspects needed to be addressed in order to quantify 51 Mn, namely preparation of thin targets via electroplating of isotopically enriched 50 Cr on gold backings, and development of a rapid procedure for the radiochemical separation of 51 Mn from irradiated chromium targets. Both these aspects were amply treated in this work while measuring cross sections relevant to the production of 51 Mn.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of ⁵⁰Cr(d,n)⁵¹Mn and ^natCr(p,x)⁵¹Mn processes with respect to the production of the positron emitter ⁵¹Mn

Klein¹,

Rösch²,

Qaim³

2000

Radiochimica Acta

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Deuteron and proton induced nuclear reactions / Enriched 50 Cr and nat Cr targets / Positron emitter 51 Mn / Excitation function / Radiochemical separation / Thick target yieldSummary. The positron emitter 51 Mn (t1/ 2 ϭ 46.2 min, Iβϩ ϭ 97%) is of potential interest in positron emission tomography (PET). With a view to optimizing its production route, excitation functions for deuteron induced nuclear reactions on isotopically enriched (ϳ95%) 50 Cr were determined radiochemically over the energy range of 3 to 13 MeV and for proton induced nuclear reactions on nat Cr in the range of 18 to 38 MeV. Cross sections are presented for the reactions: 50 Cr(d,2n) 50m Mn, 50 Cr(d,n) 51 Mn, 50 Cr(d,t) 49 Cr, 50 Cr(d,p) 51 Cr, 50 Cr(d,A) 48 V, 52 Cr(d,2p) 52 V, nat Cr(p,x) 51 Mn, nat Cr(p,x) 52 Mn, nat

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“…Metallic filings of 50 Cr°were converted almost quantitatively to pure 50 CrO 3 . The electrolyte was obtained by dissolution of the trioxide Table 2 (for more details cf.…”

Section: Target Preparationmentioning

confidence: 99%

Section: Target Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of ⁵⁰Cr(d,n)⁵¹Mn and ^natCr(p,x)⁵¹Mn processes with respect to the production of the positron emitter ⁵¹Mn

Klein¹,

Rösch²,

Qaim³

2000

Radiochimica Acta

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“…[8][9][10][11] Both the chromium metal and the sesquioxide are thermally very resistent. 12 Generally the metallic chromium targets are preferred for two reasons; first, no other interfering elements are present and second, chemical processing of the irradiated targets is easier.…”

mentioning

confidence: 99%

Electrolytic Preparation of Isotopically Enriched Hard Chromium Layers on Gold Backings for Nuclear Reaction Studies

Klein

Rösch

Qaim

1999

J. Electrochem. Soc.

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The chemical forms of chromium, employed as target material in the study of nuclear reactions, consist of Cr 2 O 3 1 and Cr, 2-7 also in the case of isotopically enriched chromium. [8][9][10][11] Both the chromium metal and the sesquioxide are thermally very resistent. 12 Generally the metallic chromium targets are preferred for two reasons; first, no other interfering elements are present and second, chemical processing of the irradiated targets is easier. The nonnoble metal (⑀ 0 ϭ Ϫ0.74 V, nonpassivated 12 ), however, is easily oxidized on the surface to sesquioxide at high local temperatures induced by high beam currents. Since the sesquioxide is insoluble in mineral acids, there may be a leaching problem at the start of the chemical processing. Especially if isotopically enriched chromium is used as the target, the losses of the enriched material due to the unleached sesquioxide have to be avoided because a quantitative recovery is mandatory. In nuclear reaction studies low beam currents are sufficient and thus metallic chromium targets are most suitable.Thin metallic chromium layers can be achieved by electrodeposition and chemical vapor deposition (CVD). 13-16 The latter procedure, however, is rather cumbersome. Although the electrodeposition of metallic chromium has been a well established procedure for about 70 years, it was essential to investigate whether this procedure could be adapted to low chromium concentrations. In this context the recently developed Cr III baths seemed to be very promising since Cr III is easily prepared and handled at low chromium concentrations. As regards the reprocessing of the enriched material, electrolytes used in electrodeposition should enable a simple and complete recovery of the enriched chromium. An exact analysis of the chromium content of the electrolyte was also desired to adjust the chosen concentrations for optimum depositions.Batch electrodeposition.-Electrolytes based on chromic acid "CrO 3 aq" are very commonly used. 13,[17][18][19][20][21][22] The Cr III baths became more promising only in recent years. [23][24][25][26] They are prepared by the addition of complexing agents such as carboxylic acids, 27,28 polycarboxylic acids 29 or cyanide derivatives, 30 but only a few fundamental investigations on the mode of operation of these new baths have been done. 29,31 Little is known about the chemical reactions in the interface between electrolyte and cathode, only thin layers can be achieved out of trivalent baths, which are useful only in decorative electroplating, 32 although efforts are under way to achieve a hard chromium plating. 33 Since just thin targets are needed in nuclear data measurements, the trivalent alternative was investigated first. However, both the citrate and the ethylenediamine tetraacetic acid (EDTA)-based trivalent baths in the pH range of 2 to 3 at 313 K did not yield deposits thicker than 0.5 mg cm Ϫ2 within 15 min of electrodeposition at about 100 mA cm Ϫ2 . This thickness was not sufficient even for nuclear reaction cross-sectional meas...

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A model for the production of (p, n) and (p, 2n) reactions at high energy

Reuland

Caretto

1970

Nuclear Physics A

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The measurement of some (p, n) and (p, 2n) reaction cross sections at 400 MeV

Cited by 6 publications

References 7 publications

Investigation of ⁵⁰Cr(d,n)⁵¹Mn and ^natCr(p,x)⁵¹Mn processes with respect to the production of the positron emitter ⁵¹Mn

Investigation of ⁵⁰Cr(d,n)⁵¹Mn and ^natCr(p,x)⁵¹Mn processes with respect to the production of the positron emitter ⁵¹Mn

Electrolytic Preparation of Isotopically Enriched Hard Chromium Layers on Gold Backings for Nuclear Reaction Studies

A model for the production of (p, n) and (p, 2n) reactions at high energy

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The measurement of some (p, n) and (p, 2n) reaction cross sections at 400 MeV

Cited by 6 publications

References 7 publications

Investigation of 50Cr(d,n)51Mn and natCr(p,x)51Mn processes with respect to the production of the positron emitter 51Mn

Investigation of 50Cr(d,n)51Mn and natCr(p,x)51Mn processes with respect to the production of the positron emitter 51Mn

Electrolytic Preparation of Isotopically Enriched Hard Chromium Layers on Gold Backings for Nuclear Reaction Studies

A model for the production of (p, n) and (p, 2n) reactions at high energy

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Product

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Investigation of ⁵⁰Cr(d,n)⁵¹Mn and ^natCr(p,x)⁵¹Mn processes with respect to the production of the positron emitter ⁵¹Mn

Investigation of ⁵⁰Cr(d,n)⁵¹Mn and ^natCr(p,x)⁵¹Mn processes with respect to the production of the positron emitter ⁵¹Mn