Publicación: Nuclear structure studies in the lead region with (d.p) reactions
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Fil: Cohen, Robert Comisión Nacional de Energía Atómica; Argentina
Price, Robert Comisión Nacional de Energía Atómica; Argentina
Mayo, Santos Comisión Nacional de Energía Atómica; Argentina
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02.60.03
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eng
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Las distribuciones de energía de los protones de las reacciones (d, p) en los isótopos de Pb y Bi se midieron con una resolución de ≈ 100 keV y se estudiaron las distribuciones angulares de varios de los grupos. La distribución angular de Pb 207 (d, p) Pb 208 (g.s.) concuerda muy bien con el cálculo de aproximación de Born de onda distorsionada de Tobocman y con distribuciones angulares medidas de ln = 1 transiciones en Pb 208 (d,p) Pb 207 La diferencia de una transición medida de ln = 3 es bastante grande. A partir de estudios de la excitación de los diversos estados de un solo orificio de Pb 207 en Pb 208 (d, p) Pb 207, se determina que la función de onda del estado fundamental de Pb 206 es aproximadamente [fórmula en papel] que tiene menos (P 1/3)-2, y más (f 1/3)-2, (f 5/3)-2 y (f 11/2)-2 que las funciones de onda teóricas de True y Ford, y de Kearsley. Se encuentra un nuevo estado sin agujeros de baja altitud de Pb 207. Se reportan extensos esfuerzos para comprender el espectro de Pb 208 (d, p) Pb 209. Las intensidades relativas de los distintos picos son muy difíciles de explicar.
Energy distributions of protons from (d, p) reactions in the isotopes of Pb and Bi were measured with ≈ 100 keV resolution and angular distributions of several of the groups were studied. The angular distribution from Pb 207 (d, p) Pb 208 (g.s.) agrees very well with the distorted wave Born approximation calculation of Tobocman and with measured angular distributions of ln = 1 transitions in Pb 208 (d,p) Pb 207 The difference from a measured ln = 3 transition is quite large. From studies of the excitation of the various single hole states of Pb 207 in Pb 208 (d, p) Pb 207, the wave function of the ground state of Pb 206 is determined to be approximately [formula on paper] which has less (P 1/3) -2, and more (f 1/3)-2, (f 5/3) -2 and (f 11/2)-2 than the theoretical wave functions of True and Ford, and of Kearsley. A new low lying non-hole state of Pb 207 is found. Extensive efforts to understand the spectrum from Pb 208 (d, p) Pb 209 are reported. The relative intensities of the various peaks are very difficult to explain.
Energy distributions of protons from (d, p) reactions in the isotopes of Pb and Bi were measured with ≈ 100 keV resolution and angular distributions of several of the groups were studied. The angular distribution from Pb 207 (d, p) Pb 208 (g.s.) agrees very well with the distorted wave Born approximation calculation of Tobocman and with measured angular distributions of ln = 1 transitions in Pb 208 (d,p) Pb 207 The difference from a measured ln = 3 transition is quite large. From studies of the excitation of the various single hole states of Pb 207 in Pb 208 (d, p) Pb 207, the wave function of the ground state of Pb 206 is determined to be approximately [formula on paper] which has less (P 1/3) -2, and more (f 1/3)-2, (f 5/3) -2 and (f 11/2)-2 than the theoretical wave functions of True and Ford, and of Kearsley. A new low lying non-hole state of Pb 207 is found. Extensive efforts to understand the spectrum from Pb 208 (d, p) Pb 209 are reported. The relative intensities of the various peaks are very difficult to explain.