The 13C(d,γ0)15N reaction around Eexc = 17.7 MeV

1978 ◽  
Vol 56 (1) ◽  
pp. 3-5 ◽  
Author(s):  
W. Del Bianco ◽  
N. Marquardt ◽  
K. Farzine ◽  
H. V. Buttlar
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Yield Curve ◽  
Resonance Structure ◽  
Crystal Spectrometer ◽  
Γ Rays

The 95° differential cross section of the 13C(d,γ0)15N reaction has been measured at deuteron energies from 1.1 to 4.2 MeV. The γ rays have been detected by a 25.4 cm long by 25.4 cm diameter NaI(Tl) crystal spectrometer. The yield curve reveals a single resonance structure at Ed = 1.74 ± 0.04 MeV (Eexc = 17.7 MeV).

The 11B(d,γ0)13C reaction in the region of the giant dipole resonance

1981 ◽  
Vol 59 (6) ◽  
pp. 781-783 ◽  
Author(s):  
G. Kajrys ◽  
W. Del Bianco ◽  
J. Kim ◽  
S. Landsberger ◽  
R. Lecomte ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Giant Dipole Resonance ◽  
Yield Curve ◽  
Plastic Scintillator ◽  
Resonant Structure ◽  
Crystal Spectrometer ◽  
Dipole Resonance ◽  
Γ Rays

The 90° differential cross section of the 11B(d,γ0)13C reaction has been measured at deuteron energies from 1.95 to 12.0 MeV in steps varying from 100 to 200 keV. The γ-rays have been detected by a 23 cm long × 23 cm diameter NaI(Tl) crystal spectrometer enclosed in a plastic scintillator anticoincidence shield. The yield curve shows a resonant structure at the energies Eexe = 20.4 ± 0.1 and 22.0 ± 0.2 MeV.

The 11B(α,γ0)15N reaction in the giant dipole resonance region

1977 ◽  
Vol 55 (4) ◽  
pp. 302-304 ◽  
Author(s):  
W. Del Bianco ◽  
S. Kundu ◽  
J. Kim
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Yield Curve ◽  
Plastic Scintillator ◽  
Resonance Region ◽  
Crystal Spectrometer ◽  
Dipole Resonance ◽  
Giant Dipole Resonance Region ◽  
Γ Rays

The 90° differential cross section of the 11B(α,γ0)15N reaction has been measured at α-particle energies from 5.74 to 17.80 MeV. The γ rays have been detected by a 23 cm long × 23 cm diameter NaI(Tl) crystal spectrometer enclosed in a plastic scintillator anticoincidence shield. The yield curve shows three well separated resonances at Eexc = 16.29 ± 0.15, 18.88 ± 0.20, and 21.26 ± 0.20 MeV.

The 12C(3He,γ0)15O reaction in the giant dipole resonance region

1978 ◽  
Vol 56 (8) ◽  
pp. 1054-1056 ◽  
Author(s):  
W. Del Bianco ◽  
J. C. Kim ◽  
G. Kajrys
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Yield Curve ◽  
Resonance Region ◽  
Resonant Structure ◽  
Crystal Spectrometer ◽  
Dipole Resonance ◽  
Giant Dipole Resonance Region ◽  
Γ Rays

The 90° differential cross section of the 12C(3He,γ0)15O reaction has been measured at 3He-particle energies from 5.24 to 13.95 MeV in steps varying from 100 to 300 keV. The γ rays have been detected by a 23 cm long × 23 cm diameter NaI(Tl) crystal spectrometer enclosed in an anticoincidence shield. The yield curve shows a resonant structure at the energies Eexc = 17.04 ± 0.06, 18.65 ± 0.06, 19.55 ± 0.08, 20.40 ± 0.07, and 21.61 ± 0.07 MeV.

The 12C(3He, γ1+2)15O reaction in the giant dipole resonance region

1989 ◽  
Vol 67 (2-3) ◽  
pp. 135-138 ◽  
Author(s):  
J. C. Kim ◽  
G. Kajrys ◽  
W. Del Bianco
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Giant Dipole Resonance ◽  
Yield Curve ◽  
Resonance Region ◽  
Crystal Spectrometer ◽  
Dipole Resonance ◽  
Giant Dipole Resonance Region ◽  
Γ Rays

The 90° differential cross section of the 12C(3He, γ1+2)15O reaction has been measured at 3He particle energies from 5.3 to 16.7 MeV in steps varying from 100 to 300 keV. The γ-rays were detected by a 23 cm long × 23 cm diameter NaI(Tl) crystal spectrometer enclosed in an anticoincidence shield. The yield curve shows a resonant behaviour at the energies Ex = 17.56 ± 0.06, 19.02 ± 0.12, and 23.80 ± 0.10 MeV.

Angular distribution of the 3H(p,γ)4He reaction at proton energies below 1 MeV

1980 ◽  
Vol 58 (10) ◽  
pp. 1496-1499 ◽  
Author(s):  
W. Del Bianco ◽  
G. Kajrys
Keyword(s):  
Angular Distribution ◽  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Angular Range ◽  
Γ Rays ◽  
Γ Ray ◽  
Energy Dependent

The differential cross section of the 3H(p,γ)4He reaction has been measured at the proton energies Ep = 0.46, 0.50, 0.62, 0.77, and 0.93 MeV. A thin 3H–Ti target has been used and the γ-rays have been detected by a 12.7 cm diameter × 15.2 cm long NaI(Tl) crystal rotating over the angular range θL = 0 to 135°. The 3H(p,γ)4He reaction is found to proceed through E1, M1, and E2 transitions, E1 transitions being predominant. The ratio of the γ-ray flux at θL = 0 and 90° is energy dependent and decreases from 0.017 ± 0.003 at Ep = 0.46 MeV to 0.0078 ± 0.006 at Ep = 0.93 MeV.

scholarly journals PHOTODISINTEGRATION OF ALIGNED DEUTERONS AT ASTROPHYSICAL ENERGIES USING LINEARLY POLARIZED PHOTONS

2013 ◽  
Vol 22 (05) ◽  
pp. 1350030
Author(s):  
S. P. SHILPASHREE ◽  
SWARNAMALA SIRSI ◽  
G. RAMACHANDRAN
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Polar Angle ◽  
University Of Virginia ◽  
Analyzing Powers ◽  
Linearly Polarized ◽  
Γ Rays ◽  
Model Independent ◽  
Polarized Photons

Following the model independent approach to deuteron photodisintegration with linearly polarized γ-rays, we show that the measurements of the tensor analyzing powers on aligned deuterons along with the differential cross-section involve five different linear combinations of the isovector [Formula: see text]; j = 0, 1, 2 amplitudes interfering with the isoscalar M1s and E2s amplitudes. This is of current interest in view of the recent experimental finding [M. A. Blackston et al., Phys. Rev. C78 (2008) 034003] that the three [Formula: see text] amplitudes are distinct and also the reported experimental observation [B. D. Sawatzky, Ph.D. thesis, University of Virginia (2005)] on the front–back (polar angle) asymmetry in the differential cross-section.

The influence of screening on the creation and stopping of electrons

1934 ◽  
Vol 30 (4) ◽  
pp. 524-539 ◽  
Author(s):  
H. A. Bethe
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Main Part ◽  
Primary Particle ◽  
Asymptotic Value ◽  
Fast Electrons ◽  
High Energies ◽  
Γ Rays

The cross-sections for the emission of radiation by very fast electrons (energy great compared with mc2) and for the production of pairs of positive and negative electrons by very hard γ-rays is calculated, considering the screening of the atomic field in which the processes happen. The main part of the paper deals with the integration of the differential cross-section over the angles. It is found that the integral cross-section increases steadily with increasing energy of the primary particle, reaching an asymptotic value for extremely high energies.

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