How to synthesise Gold?

It's possible, since long time ago, but well I'm talking chemically...

Wikipedia:

Gold

Chrysopoeia, the artificial production of gold is the symbolic goal of alchemists. Alchemists often understood this as a metaphor for a mystical, philosophical, psychological, medical, or religious transformation. Despite this, some alchemists interpreted this literally, and attempted to physically transmute base metals into gold. It is possible in particle accelerators or nuclear reactors, although the production cost is currently many times the market price of gold. Since there is only one stable gold isotope, ¹⁹⁷Au, nuclear reactions must create this isotope in order to produce usable gold.

Gold synthesis in an accelerator

Gold synthesis in a particle accelerator is possible in many ways. The Spallation Neutron Source has a liquid mercury target that will be transmuted into gold, platinum, and iridium, which are lower in atomic number.^{[citation needed]}

Gold synthesis in a nuclear reactor

Gold was first synthesized from mercury by neutron bombardment in 1941, but the isotopes of gold produced were all radioactive.^[3]

Gold can currently be manufactured in a nuclear reactor by irradiation either of platinum or mercury.

Only the mercury isotope ¹⁹⁶Hg, which occurs with a frequency of 0.15% in natural mercury, can be converted to gold by neutron capture, and following electron capture-decay into ¹⁹⁷Au with slow neutrons. Other mercury isotopes are converted when irradiated with slow neutrons into one another or formed mercury isotopes, which beta decay into thallium.

Using fast neutrons, the mercury isotope ¹⁹⁸Hg, which composes 9.97% of natural mercury, can be converted by splitting off a neutron and becoming ¹⁹⁷Hg, which then disintegrates to stable gold. This reaction, however, possesses a smaller activation cross-section and is feasible only with un-moderated reactors.

It is also possible to eject several neutrons with very high energy into the other mercury isotopes in order to form ¹⁹⁷Hg. However such high-energy neutrons can be produced only by particle accelerators^{[clarification needed]}.

http://en.wikipedia.org/wiki/Synthesis_of_precious_metals#Gold

Now, if you are talking from the alchemy point of view...

The alchemists used this language as a disguise for what they was really doing, because, what they did was considered to be against the dominant religion at that time, and they was prosecuted by the church...

I'm sure there is someone with an extensive knowledge of the real alchemy here that can help you, otherwise I can help you later, but don't expect it is about turning lead to gold x)

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Solarkid May 11, 2012 at 2:30pm

It's possible, since long time ago, but well I'm talking chemically...

Wikipedia:

Gold

Chrysopoeia, the artificial production of gold is the symbolic goal of alchemists. Alchemists often understood this as a metaphor for a mystical, philosophical, psychological, medical, or religious transformation. Despite this, some alchemists interpreted this literally, and attempted to physically transmute base metals into gold. It is possible in particle accelerators or nuclear reactors, although the production cost is currently many times the market price of gold. Since there is only one stable gold isotope, ¹⁹⁷Au, nuclear reactions must create this isotope in order to produce usable gold.

Gold synthesis in an accelerator

Gold synthesis in a particle accelerator is possible in many ways. The Spallation Neutron Source has a liquid mercury target that will be transmuted into gold, platinum, and iridium, which are lower in atomic number.^{[citation needed]}

Gold synthesis in a nuclear reactor

Gold was first synthesized from mercury by neutron bombardment in 1941, but the isotopes of gold produced were all radioactive.^[3]

Gold can currently be manufactured in a nuclear reactor by irradiation either of platinum or mercury.

Only the mercury isotope ¹⁹⁶Hg, which occurs with a frequency of 0.15% in natural mercury, can be converted to gold by neutron capture, and following electron capture-decay into ¹⁹⁷Au with slow neutrons. Other mercury isotopes are converted when irradiated with slow neutrons into one another or formed mercury isotopes, which beta decay into thallium.

Using fast neutrons, the mercury isotope ¹⁹⁸Hg, which composes 9.97% of natural mercury, can be converted by splitting off a neutron and becoming ¹⁹⁷Hg, which then disintegrates to stable gold. This reaction, however, possesses a smaller activation cross-section and is feasible only with un-moderated reactors.

It is also possible to eject several neutrons with very high energy into the other mercury isotopes in order to form ¹⁹⁷Hg. However such high-energy neutrons can be produced only by particle accelerators^{[clarification needed]}.

http://en.wikipedia.org/wiki/Synthesis_of_precious_metals#Gold

Now, if you are talking from the alchemy point of view...

The alchemists used this language as a disguise for what they was really doing, because, what they did was considered to be against the dominant religion at that time, and they was prosecuted by the church...

I'm sure there is someone with an extensive knowledge of the real alchemy here that can help you, otherwise I can help you later, but don't expect it is about turning lead to gold x)