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Journal Article

#### Rate for laser-induced nuclear dipole absorption

##### External Resource

https://journals.aps.org/prc/pdf/10.1103/PhysRevC.101.034619

(Publisher version)

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##### Fulltext (public)

1912.05991.pdf

(Preprint), 279KB

##### Supplementary Material (public)

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##### Citation

Pálffy, A., Reinhard, P.-G., & Weidenmüller, H. A. (2020). Rate for laser-induced
nuclear dipole absorption.* Physical Review C,* *101*(3):
034619. doi:10.1103/PhysRevC.101.034619.

Cite as: https://hdl.handle.net/21.11116/0000-0006-582F-4

##### Abstract

Using the Brink-Axel hypothesis we derive the rate $R$ for nuclear dipole

excitation by a laser pulse carrying $N \gg 1$ photons with average energy

$\hbar \omega_0 \approx 5$ MeV. As expected $R \propto (\hbar \omega_0)^3$. The

rate is also proportional to the aperure $\alpha$ of the laser pulse. Perhaps

less expected is the fact that $R \propto N$, irrespective of the degree of

coherence of the laser pulse. The expression for $R$, derived for a nearly

stationary laser pulse, is valid also for short times and can, thus, be used in

simulations via rate equations of multiple nuclear dipole excitations by a

single pulse. The explicit dependence of $R$ on the parameters of the laser

pulse and on nuclear parameters given in the paper should help to optimize

experiments on laser-nucleus reactions.

excitation by a laser pulse carrying $N \gg 1$ photons with average energy

$\hbar \omega_0 \approx 5$ MeV. As expected $R \propto (\hbar \omega_0)^3$. The

rate is also proportional to the aperure $\alpha$ of the laser pulse. Perhaps

less expected is the fact that $R \propto N$, irrespective of the degree of

coherence of the laser pulse. The expression for $R$, derived for a nearly

stationary laser pulse, is valid also for short times and can, thus, be used in

simulations via rate equations of multiple nuclear dipole excitations by a

single pulse. The explicit dependence of $R$ on the parameters of the laser

pulse and on nuclear parameters given in the paper should help to optimize

experiments on laser-nucleus reactions.