Cross section for the reaction 115In(γ, γ′)115m In in the region of the E1 giant resonance

Effective photoexcitation cross section of115In(γ,γ′)115mIn from photoactivation data

“…This second peak is largely discussed in Ref. [14] and is contradicted. Figure 7b presents a calculated photoexcitation cross section obtained with the TALYS 1.4 code.…”

“…[7,8,26], in a figure extracted from Ref. [14]. These cross sections were obtained from activation data and show large discrepancies.…”

“…[8] estimate the uncertainty on σ 2 in the peak region at ∼30%, and the uncertainty on the position and full width at half maximum of the peak to be ±1 MeV. The cross section σ 1 from (a) Experimental cross sections, extracted from [14], with σ 1 from Ref. [7], σ 2 from Ref.…”

“…Early studies from the mid-1950s show a peak-shaped cross section, with a maximum of a few mb at about 8-10 MeV but disagree on the exact value of the maximum as well as on its position [7,8]. A renewed interest in photoactivation and nuclear resonance fluorescence experiments on isomers led to several studies in the late 1980s and a e-mail: versteeg@cenbg.in2p3.fr cross section at 22 MeV, well beyond to the Giant Dipole Resonance, are reported [12,13], but have recently been contradicted [14].…”

Low-energy modification of the γ strength function of the odd-even nucleus In115

“…A renewed interest in photoactivation experiments on isomers led to several studies on 115 In [13,16,17], but contradictory results about a second maximum at 22 MeV, close to the GDR, have been reported [18,19]. A recent revisitation of these results concluded that no second sharp peak was to be expected at high energies in the cross section [20]. Finally, an effective integrated cross section (σ ) is introduced in Ref.…”