  Internal jet structure in dijet production in deep-inelastic scattering is
measured with the H1 detector at HERA. Jets with transverse energies ET,Breit >
5 GeV are selected in the Breit frame employing k_perp and cone jet algorithms.
In the kinematic region of squared momentum transfers 10 < Q2 <~ 120 GeV2 and
x-Bjorken values 2.10^-4 <~ xBj <~ 8.10^-3, jet shapes and subjet
multiplicities are measured as a function of a resolution parameter.
Distributions of both observables are corrected for detector effects and
presented as functions of the transverse jet energy and jet pseudo-rapidity.
Dependences of the jet shape and the average number of subjets on the
transverse energy and the pseudo-rapidity of the jet are observed. With
increasing transverse jet energies and decreasing pseudo-rapidities,
i.e.towards the photon hemisphere, the jets are more collimated. QCD models
give a fair description of the data.
