SELECTIVITY OF THE (13C, 13N), (13C, 13B) AND (12C, 12N) REACTIONS AT 30 MeV/n
نویسندگان
چکیده
منابع مشابه
A COMPARATIVE STUDY OF THE ‘?(~,P’)‘~C AND 13C(p, n)13N REACTIONS AT EP = 35 MeV
Differential cross sections were measured at E, = 35 MeV for the i3C(p, n) and “C(p, p’) reactions leading to the four low-lying states in the mirror nuclei i3N and ‘%. In addition, the analyzing powers were measured for the 13C(p, p’) reaction. The data are generally well accounted for by DWBA calculations except for the 13C(p, ~‘)‘~C(3.09 MeV, f’) reaction, for which the calculations cannot e...
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"C/"C ratios have been determined for plant tissue from 104 species representing 60 families. Higher plants fall into two categories, those with low 5PDB "3C values (-24 to -34%o) and those with high "3C values (-6 to -19%0). Algae have 8 "C values of -12 to -23%o. Photosynthetic fractionation leading to such values is discussed. Carbon isotope fractionation is associated with photosynthesis. T...
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Many apparently achiral organic molecules on Earth may be chiral because of random substitution of the 1.11% naturally abundant 13C for 12C in an enantiotopic moiety within the structure. However, chirality from this source is experimentally difficult to discern because of the very small difference between 13C and 12C. We have demonstrated that this small difference can be amplified to an easil...
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A continuous-flow cavity ring-down spectroscopy (CRDS) system integrating a chromatographic separation technique, a catalytic combustor, and an isotopic (13)C/(12)C optical analyzer is described for the isotopic analysis of a mixture of organic compounds. A demonstration of its potential is made for the geochemically important class of short-chain hydrocarbons. The system proved to be linear ov...
متن کاملبررسی تبعیض ایزوتوپ‌های کربن (13C و 12C) برای برآورد تنش رطوبتی ذرت
تنش رطوبتی موجب بسته شدن روزنه‌های برگ گیاه و کاهش جذب کربن می‌گردد و این عمل باعث کاهش عملکرد در کشاورزی دیم می‌شود. نسبت کربن 13 (13C) به کربن 12 (12C) اتمسفر که توسط گیاه جذب می‌شود به‌مدت زمان باز بودن روزنه‌های گیاه که به نوبه خود به‌میزان تنش رطوبتی بستگی دارد، وابسته می‌باشد. هدف از این مطالعه بررسی تبعیض ایزوتوپ‌های کربن (13C و 12C) برای برآورد تنش رطوبتی ذرت می‌باشد. مزرعه محل آزمایش د...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1986
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1986420