Aerosol-generating system and aerosol-generating article for use in such a system

An aerosol-generating article comprising a cartridge, the cartridge comprising:

• a first compartment comprising a nicotine source;
• a second compartment comprising a second substance source;
• a susceptor arranged in any one of the first compartment or the second compartment,
• wherein the first compartment and the second compartment are arranged in parallel in the cartridge, and
• wherein the susceptor is arranged in a central portion of the first compartment or of the second compartment.

An aerosol-generating article comprising a cartridge, the cartridge comprising:

• a first compartment comprising a nicotine source;
• a second compartment comprising a second substance source;
• a susceptor arranged in any one of the first compartment or the second compartment,
• wherein the first compartment and the second compartment are arranged in parallel in the cartridge, and
• wherein an outer cartridge wall comprises thermally insulating material.

A method for controlling a reaction stoichiometry between nicotine vapour and a second substance vapour in an aerosol-generating system for generation of aerosol comprising nicotine, the method comprising:

• providing two substances including nicotine and a second substance;
• arranging the two substances in two separate, thermally coupled compartments arranged in parallel;
• providing a susceptor;
• arranging the susceptor in one of the two compartments;
• heating one of the two substances to a first temperature by the susceptor;
• generating a temperature gradient between the two substances;
• and
• heating the other one of the two substances to a second temperature through heat transfer from the one substance heated by the susceptor by heat transfer from the compartment in which the susceptor is arranged to the other compartment,
• wherein the second temperature is lower than the first temperature, thereby controlling a ratio of a vaporized amount of nicotine and vaporized amount of second substance.

An aerosol-generating article comprising a cartridge, the cartridge comprising:

• a first compartment comprising a nicotine source;
• a second compartment comprising a second substance source;
• a susceptor arranged in any one of the first compartment or the second compartment,
• wherein the first compartment and the second compartment are arranged in parallel in the cartridge,
• wherein the cartridge comprises a separation wall separating the first compartment from the second compartment,
• wherein the separation wall comprises thermally conductive material, and
• wherein the separate wall is made of a metal or thermally conductive metal alloy.